APA (7th ed.) Citation

Gehlbach, F. R. (1966). Grand Canyon amphibians and reptiles: Field check list. GCNHA.

Chicago Style (17th ed.) Citation

Gehlbach, Frederick R. Grand Canyon Amphibians and Reptiles: Field Check List. [Grand Canyon, Ariz.]: GCNHA, 1966.

MLA (9th ed.) Citation

Gehlbach, Frederick R. Grand Canyon Amphibians and Reptiles: Field Check List. GCNHA, 1966.

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