APA Citation

Keller, E. A. 1. (1992). Environmental geology (6¦. ed.). New York: Macmillan.

Chicago Style Citation

Keller, E. A. 1942. Environmental Geology. 6¦. ed. New York: Macmillan, 1992.

MLA Citation

Keller, E. A. 1942. Environmental Geology. 6¦. ed. New York: Macmillan, 1992.

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