APA (7th ed.) Citation

Keller, E. A. (2012). Introduction to environmental geology (Fifth edition.). Prentice Hall.

Chicago Style (17th ed.) Citation

Keller, Edward A. Introduction to Environmental Geology. Fifth edition. Upper Saddle River, New Jersey: Prentice Hall, 2012.

MLA (9th ed.) Citation

Keller, Edward A. Introduction to Environmental Geology. Fifth edition. Prentice Hall, 2012.