Literature
- Caporaso, F. 1991. The Galapagos tortoise conservation program: the plight and future for the Pinzón Island tortoise. In: K. R. Beaman, F. Caporaso, S. McKeown, and M. D. Graff (eds.), Proceedings of the first International Symposium on Turtles & Tortoises: Conservation and Captive Husbandry, pp. 113-116. Chapman Univ., California.
- Cayot, L. J., and C. Márquez. 1994. Informacion sobre las poblaciones de Galápagos en Isabela. Carta Informativa, Estacion Cientifica Charles Darwin 38: 3.
- Günther, A. 1875. Description of the living and extinct races of gigantic land-tortoises. Parts 1, 11. Introduction, and the tortoises of the Galápagos Islands. Phil. Trans. Royal Soc. London 165: 251-284.
- MacFarland, C. G., J. Villa, and B. Toro. 1974a. The Galápagos giant tortoises (Geochelone elephantopus). Part I: Status of the surviving populations. Biol. Conserv. 6: 118-133.
- MacFarland, C. G., J. Villa, and B. Toro. 1974b. The Galápagos giant tortoises (Geochelone elephantopus). Part II: Conservation methods. Biol. Conserv. 6: 198-212.
- Noegel, R. P., and G. A. Moss. 1989. Breeding the Galapagos tortoise Geochelone elephantopus at Life Fellowship Bird Sanctuary, Seffner. Int. Zoo Yearb. 28: 78-81.
- Pritchard, P. C. H. 1979. Encyclopedia of turtles. T. F. H. Publ., Inc., Neptune, New Jersey. 895 pp.
- Pritchard, P. C. H. 1996a. The Galápagos tortoises: nomenclatural and survival status. Chelonian Res. Monogr. (1): 1-85.
- Throp, J. L. 1976. Honolulu honeymoon. Animal Kingdom. Aug.-Sept.
- Van Denburgh, J. 1914. Expedition of the California Academy of Sciences to the Galápagos Islands, 1905-1906. X. The gigantic land tortoises of the Galápagos Archipelago. Proc. California Acad. Sci. (4)2: 203-374.