APA (7th ed.) Citation

Keller, E. A. (1988). Environmental geology (fifth edition.). Merrill Publishing Company.

Chicago Style (17th ed.) Citation

Keller, Edward A. Environmental Geology. fifth edition. Columbus, Oh: Merrill Publishing Company, 1988.

MLA (8th ed.) Citation

Keller, Edward A. Environmental Geology. fifth edition. Merrill Publishing Company, 1988.

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