Literature
- Ewert, M. A. 1979. The embryo and its egg: development and natural history. In: M. Harless and H. Morlock (eds.), Turtles: Perspectives and Research, pp. 333-413. Wiley-Interscience, New York.
- Loveridge, A. 1941. Revision of the African terrapin of the family Pelomedusidae. Bull. Mus. Comp. Zool. Harvard 88: 467-524.
- Smith, A. 1838-1849. Illustrations of the zoology of South Africa, consisting chiefly of Figures and Descriptions of the Objects of Natural History collected during an Expedition into the Interior of South Africa, in the years 1834, 1835 and 1836. Vol. 3. Reptilia. Smith, Elder & Co., London. 28 pp.