APA (7th ed.) Citation

Leidy, J. (1865). Cretaceous reptiles of the United States. Smithsonian Inst.

Chicago Style (17th ed.) Citation

Leidy, Joseph. Cretaceous Reptiles of the United States. Washington: Smithsonian Inst, 1865.

MLA (9th ed.) Citation

Leidy, Joseph. Cretaceous Reptiles of the United States. Smithsonian Inst, 1865.

Warning: These citations may not always be 100% accurate.