APA-Zitierstil (7. Ausg.)

Keller, E. A. (2008). Introduction to environmental geology (4th ed.). Pearson Prentice Hall.

Chicago-Zitierstil (17. Ausg.)

Keller, Edward A. Introduction to Environmental Geology. 4th ed. Upper Saddle River, N.J: Pearson Prentice Hall, 2008.

MLA-Zitierstil (9. Ausg.)

Keller, Edward A. Introduction to Environmental Geology. 4th ed. Pearson Prentice Hall, 2008.