APA Edition Citation

Zen, E. e. a. (1968). Studies of Appalachian Geology. Interscience.

Chicago Edition Citation

Zen, E-ran. et. al. Studies of Appalachian Geology. New York: Interscience, 1968.

MLA Edition Citation

Zen, E-ran. et. al. Studies of Appalachian Geology. Interscience, 1968.

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