APA (7th ed.) Citation

Kooyman, G. L., Drabek, C. M., Elsner, R., & Campell, W. B. (1971). Diving behavior of the Emperor Penguin, Aptenodytes forsteri. American Ornithologists Union.

Chicago Style (17th ed.) Citation

Kooyman, G. L., C. M. Drabek, R. Elsner, and W. B. Campell. Diving Behavior of the Emperor Penguin, Aptenodytes Forsteri. American Ornithologists Union, 1971.

MLA (9th ed.) Citation

Kooyman, G. L., et al. Diving Behavior of the Emperor Penguin, Aptenodytes Forsteri. American Ornithologists Union, 1971.