Literature
- Bickham, J. W. 1975. A cytosystematic study of turtles in the genera Clemmys, Mauremys and Sacalia. Herpetologica 31: 198-204.
- Gray, J. E. 1870b. Supplement to the Catalogue of Shield Reptiles in the Collection of the British Museum. Pt. 1, Testudinata (tortoises). Taylor and Francis, London. 120 pp.