APA (7th ed.) Citation

Williston, S. W. (1911). American Permian vertebrates. The University of Chicago Press.

Chicago Style (17th ed.) Citation

Williston, Samuel Wendell. American Permian Vertebrates. Chicago, Ill.: The University of Chicago Press, 1911.

MLA (9th ed.) Citation

Williston, Samuel Wendell. American Permian Vertebrates. The University of Chicago Press, 1911.

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