APA (7th ed.) Citation

Keller, E. A. (1976). Environmental geology. Merrill.

Chicago Style (17th ed.) Citation

Keller, Edward A. Environmental Geology. Columbus, Ohio: Merrill, 1976.

MLA (9th ed.) Citation

Keller, Edward A. Environmental Geology. Merrill, 1976.

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