Παραπομπή APA

Deraniyagala, P. E. P. (1939). Tetrapod reptiles of Ceylon. Ceylon.

Παραπομπή Chicago Style

Deraniyagala, P E P. Tetrapod Reptiles of Ceylon. England: Ceylon, 1939.

Παραπομπή MLA

Deraniyagala, P E P. Tetrapod Reptiles of Ceylon. Ceylon, 1939.