- Palmatier 1993
- Lepidochelys kempii (Kemp's ridley). Nesting. Herpetol. Rev. 24: 149-150.
- , Guillette 1988
- Histology and functional morphology of the female reproductive tract of the tortoise Gopherus polyphemus. Amer. J. Anat. 183: 200-211.
- , Guillette 1990
- Morphological changes in the oviductal endometrium during the reproductive cycle of the tortoise, Gopherus polyphemus. J. Morphol. 204: 323-333.
- Paolillo 1985
- Description of a new subspecies of the turtle Rhinoclemmys punctularia (Daudin) (Testudines: Emydidae) from southern Venezuela. Amphibia-Reptilia 6: 293-305.
- Parham, Zug 1996
- Chelonia agassizii --valid or not? Marine Turtle Newsl. 72: 2-5.
- , Whiteman 1993
- Genetic diversity in fragmented populations of Clemmys guttata and Chrysemys picta marginata as shown by DNA fingerprinting. Copeia
- Parmenter 1985
- Reproduction and survivorship of Chelodina longicollis (Testudinata: Chelidae). In: G. Grigg, R. Shine, and H. Ehmann (eds.), Biology of Australasian Frogs and Reptiles, pp. 53-61. Royal Society of New South Wales, Sydney, Australia.
- Parmenter, Limpus 1995
- Female recruitment, reproductive longevity and inferred hatchling survivorship for the flatback turtle (Natator depressus) at a major eastern Australian rookery. Copeia
- Parmenter, Avery 1990
- The feeding ecology of the slider turtle. In: J. W. Gibbons (ed.), Life history and ecology of the slider turtle, pp. 257-266. Smithsonian Inst. Press, Washington, D. C.
- , 1961
- Two Jurassic turtle skulls: a morphological study. Bull. Mus. Comp. Zool. Harvard 125: 43-107.
- Paukstis, 1990
- Sex determination in reptiles: summary of effects of constant temperatures of incubation on sex ratios of offspring. Smithsonian Herpetol. Infor. Serv. 83: 1-28.
- Pauler 1988
- Reproduction en captivité de Malacochersus tornieri (Siebenrock, 1903). Mesogée 48: 71-73.
- Pauler, Trebbau 1995
- Erstnachweis von Podocnemis lewyana Duméril, 1852 (Testudines) in Venezuela. Salamandra 31(3): 181-186.
- Pawley 1975
- Man and tortoise. Field Mus. Natur. Hist. Bull. 46(10): 13-18.
- Perälä 1996
- Etalä-Turkin maakilpikonnista Morfologisia ja ecologisia eroja (Testudo ibera Pallas 1814 & Testudo ibera anamurensis Weissinger 1987) sekä iiden maakilpikonnalajin kuvaus + 15 kuvaa, pp. 14-26. In: Virallinen Kongressijulkaisu. Herpetokongressi I, Helsinki.
- Perälä 1999
- Morphological variation among Palaearctic tortoises of the Testudo graeca complex with a focus on the Levantine-Libyan distribution, taxonomy, and phylogenies within the genus Testudo (Chelonia: Testudinidae). Honours degree dissertation. University of Bristol (School of Biological Sciences). 78 pp.
- Perea 1996
- First fossil record (Late Miocene) of Phrynops (P. geoffroanus complex: Chelidae) from Uruguay: biostratigraphical and paleoenvironmental context. Copeia
- Peréz-Emán, Paolillo 1997
- Diet of the pelomedusid turtle Pelocephalus dumerilianus in the Venezuelan Amazon. J. Herpetol. 31(2): 173-179.
- Perez-Higareda, 1987
- Comments on geographic variation in Rhinoclemmys areolata (Testudines). Bull. Maryland Herpetol. Soc. 23(3): 113-118.
- Pérez-Quintero 1989
- Primeros datos sobre oología de retiles de la provincia de Huelva. Comunic. IV Congreso Nacional de Herpetología. Madrid,
- Perillo 1997
- Seasonal movements and habitat preferences of spotted turtles (Clemmys guttata) in north central Connecticut. Chelonian Conserv. Biol. 2: 444-447.
- , Finnie 1979
- First breeding of the Aldabra tortoise Geochelone gigantea. Int. Zoo Yearbook 19: 53-55.
- Petzold 1965
- Cuora galbinifrons und andere südostasiatische Schildkröten im Tierpark Berlin. Aquar. Terr.-Zeit. 18(3/4): 87-91, 119-121.
- Petzold 1963
- Über einige Schildkröten aus Nord-Vietnam im Tierpark, Berlin. Senck. Biol. 44: 1-20.
- Philippen 1988
- Bemerkungen und Pflege einer relativ unbekannten Emydide, Notochelys platynota (Gray 1834), der Flachrückenschildkröte. Schildkröte (N. F.) 2(1): 26-35.
- Philippen, Grossmann 1990
- Eine neue Schlanghalsschildkröte von Neuguinea: Chelodina reimanni, sp. n. Zool. Abh. St. Mus. Tierk. Dresden 46: 95-102.
- Pieau 1972
- Effects de la température sur le développement des glandes génitales chez les embryons de deux Chéloniens, Emys orbicularis L. et Testudo graeca L. C. R. Acad. Sci., Paris 274: 719-722.
- Pieau 1973
- Nouvelles données expérimentales concernant les effects de la température sur la différenciation sexuelle chez les embryons de Chéloniens. C. R. Acad. Sci., Paris 277: 2789-2792.
- Pieau 1971
- Sur la proportion sexuelle chez les embryons de deax Chéloniens (Testudo graeca L. et Emys orbicularis L.) issus d'oeufs incubés artificiellement. C. R. Acad. Sci., Paris 272: 3071-3074.
- Pitler 1985
- Malaclemys terrapin terrapin (northern diamondback terrapin). Behavior. Herpetol. Rev. 16: 82.
- Plummer 1977b
- Reproduction and growth in the turtle Trionyx muticus. Copeia 1977: 440-447.
- Plummer 1977a
- Notes on the courtship and mating behavior of the softshell turtle, Trionyx muticus (Reptilia, Testudines, Trionychidae). J. Herpetol. 11: 90-92.
- Plummer 1994
- Thermal limits of incubation in embryos of softshell turtles (Apalone mutica). Chelonian Conserv. Biol. 1: 141-144.
- Pluto, Bellis 1986
- Habitat utilization by the turtle, Graptemys geographica, along a river. J. Herpetol. 20: 22-31.
- Pluto, Bellis 1988
- Seasonal and annual movements of riverine map turtles, Graptemys geographica. J. Herpetol. 11: 152-158.
- Poglayen 1965
- Observations on Herrera's mud turtle Kinosternon herrerai Stejneger. Intern. Zoo Yearb. 5: 171-173.
- Polisar 1994
- New legislation for the protection and management of Dermatemys mawii in Belize, Central America. Herp. Rev. 25: 47-49
- Polisar 1996
- Reproductive biology of a flood-season nesting freshwater turtle of the northern neotropics: Dermatemys mawii in Belize. Chelonian Conserv. Biol. 2(1): 13-25.
- Poly, Noggle 1996
- Terrapene carolina carolina (eastern box turtle). Habitat. Herpetol. Rev. 27: 78.
- Pough 1968
- The systematic status of painted turtles (Chrysemys) in the northeastern United States. Copeia
- Powders 1978
- Observations of oviposition and natural incubation of eggs of the alligator snapping turtle, Macroclemys temminckii, in Georgia. Copeia
- Power 1927
- On the herpetological fauna of the Lobatsi-Linokana area. Part 1. -- Lobatsi. Trans. Royal Soc. S. Africa 14: 405-422.
- Praedicow 1984
- De Chinese pauwoogschildpad (Sacalia bealei), een zeldzaam terrariumdier. Lacerta 42(10/11): 207-211.
- Pritchard 1996b
- Are leatherbacks really threatened with extinction? Chelonian Conserv. Biol. 2: 303-305.
- Pritchard 1986
- A reinterpretation of Testudo gigantea Schweigger, 1812. J. Herpetol. 20(4): 522-534.
- Pritchard 1987
- Phrynops zuliae. Catalog. Amer. Amphib. Rept. 404: 1-2.
- Pritchard 1993
- Carapacial pankinesis in the Malayan softshell turtle, Dogania subplana. Chelonian Conserv. Biol. 1: 31-36.
- Pritchard 1980
- Dermochelys, D. coriacea. Catalog. Amer. Amphib. Rept. 238: 1-4.
- Pritchard 1979
- Encyclopedia of turtles. T. F. H. Publ., Inc., Neptune, New Jersey. 895 pp.
- Pritchard 1984
- Further thoughts on Lonesome George. Noticias de Galápagos 39: 20-23.
- Pritchard 1975
- Distribution of tortoises in tropical South America. Chelonia 2(1): 3-10.
- Pritchard 1973
- International migrations of South American sea turtles (Cheloniidae and Dermochelidae). Animal Behav. 21: 18-27.
- Pritchard 1997
- Galápagos tortoises' nomenclature: a reply. Chelonian Conserv. Biol. 2(4): 619-621.
- Pritchard 1967
- Living turtles of the world. T. F. H. Publ., Inc., Jersey City, New Jersey. 288 pp.
- Pritchard 1982
- Nesting of the leatherback turtle, Dermochelys coriacea in Pacific Mexico, with a new estimate of the World population status. Copeia
- Pritchard 1989
- The alligator snapping turtle: biology and conservation. Milwaukee Public Mus., Milwaukee, Wisconsin. 104 pp.
- Pritchard 1969
- Sea turtles of the Guianas. Bull. Florida St. Mus. Biol. Sci. 13: 85-140.
- Pritchard 1996a
- The Galápagos tortoises: nomenclatural and survival status. Chelonian Res. Monogr. (1): 1-85.
- Pritchard 1964
- Turtles of British Guiana. Proc. British Guiana Mus. Zool. (39): 19-45.
- Pritchard 1971
- The leatherback or leathery luth. IUCN Monogr. (1): 1-39.
- Pritchard 1988
- The loggerhead in Guyana. Marine Turtle Newsl. 43: 6-7.
- Pritchard, Márquez 1973
- Kemp's ridley turtle or Atlantic ridley, Lepidochelys kempi. IUCN Monogr. 2. 30 pp.
- Pritchard, Trebbau 1984
- Turtles of Venezuela. Soc. Stud. Amphib. Rept. 403 pp.
- Pritchard, Márquez 1973
- Kemp's ridley turtle or Atlantic ridley Lepidochelys kempi. IUCN Monogr. (2): 1-30.
- Pritchard, McCord 1991
- A new emydid turtle from China. Herpetologica 47: 139-147.
- Proceedings... 1976
- -. Desert Tortoise Council, Inc., Long Beach, California.
- Procter 1922
- A study of the remarkable tortoise, Testudo loveridgii Blgr., and the morphogeny of the chelonian carapace. Proc. Zool. Soc. London