Deraniyagala, P. E. P. (1939). Tetrapod reptiles of Ceylon. Ceylon.
Chicago Style aipamenaDeraniyagala, P E P. Tetrapod Reptiles of Ceylon. England: Ceylon, 1939.
MLA aipamenaDeraniyagala, P E P. Tetrapod Reptiles of Ceylon. Ceylon, 1939.
Kontuz: berrikusi erreferentzia hauek erabili aurretik.