Cita APA (7a ed.)

Gans, C., & Billet, F. (1985). Biology of the reptilia. Wiley & Sons.

Cita Chicago Style (17a ed.)

Gans, Carl, y Frank Billet. Biology of the Reptilia. New York [etc.]: Wiley & Sons, 1985.

Cita MLA (9a ed.)

Gans, Carl, y Frank Billet. Biology of the Reptilia. Wiley & Sons, 1985.