1. Spotila, J. R. et al. Chelonian Cons. Biol. 2, 209– 222 (1996).
2. Smith, M. A. The Fauna of British India, including Ceylon and Burma. Reptilia and Amphibia Vol I. Loricata, Testudines (Taylor & Francis, London, 1931).
3. Deraniyagala, P. E. P. The Tetrapod Reptiles of Ceylon Vol I. Testudines and Crocodilians (Ceylon Government Press, Colombo, 1939).
4. Chan, E. H. & Liew, H. C. Chelonian Cons. Biol. 2, 196–203 (1996).
5. Steyermark, A. C. et al. Chelonian Cons. Biol. 2, 173– 183 (1996).