APA (7th ed.) Citation

Keller, E. A. (1992). Environmental geology (6th ed.). Pearson.

Chicago Style (17th ed.) Citation

Keller, Edward A. Environmental Geology. 6th ed. London: Pearson, 1992.

MLA (8th ed.) Citation

Keller, Edward A. Environmental Geology. 6th ed. Pearson, 1992.

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