APA (7th ed.) Citation

Ruthven, A. G., & Carriker, M. A. (1922). The amphibians and reptiles of the Sierra Nevada de Santa Marta, Colombia. The University.

Chicago Style (17th ed.) Citation

Ruthven, Alexander Grant, and Melbourne Armstrong Carriker. The Amphibians and Reptiles of the Sierra Nevada De Santa Marta, Colombia. Ann Arbor, Mich.: The University, 1922.

MLA (9th ed.) Citation

Ruthven, Alexander Grant, and Melbourne Armstrong Carriker. The Amphibians and Reptiles of the Sierra Nevada De Santa Marta, Colombia. The University, 1922.