Literature
- Loveridge, A., and E. E. Williams. 1957. Revision of the African tortoises and turtles of the suborder Cryptodira. Bull. Mus. Comp. Zool. Harvard 115: 163-557.
- McDowell, S. B. 1964. Partition of the genus Clemmys and related problems in the taxonomy of the aquatic Testudinidae. Proc. Zool. Soc. London 143: 239-279.
- Smith, M. A. 1916. A list of the crocodiles, tortoises, turtles and lizards at present known to inhabit Siam. J. Natur. Hist. Soc. Siam 2: 48-57.