APA (7th ed.) Citation

Häntzschel, W., El-Baz, F., & Amstutz, C. (1968). Coprolites: An annotated bibliography. Memoir / The Geological Society of America.

Chicago Style (17th ed.) Citation

Häntzschel, Walter, Farouk El-Baz, and Christian Amstutz. "Coprolites: An Annotated Bibliography." Memoir / The Geological Society of America 1968.

MLA (9th ed.) Citation

Häntzschel, Walter, et al. "Coprolites: An Annotated Bibliography." Memoir / The Geological Society of America, 1968.