APA (7th ed.) Citation

Plummer, C. C., & Carlson, D. H. (2008). Physical geology (12th ed.). McGraw-Hill.

Chicago Style (17th ed.) Citation

Plummer, Charles C., and Diane H. Carlson. Physical Geology. 12th ed. Dubuque, IA: McGraw-Hill, 2008.

MLA (9th ed.) Citation

Plummer, Charles C., and Diane H. Carlson. Physical Geology. 12th ed. McGraw-Hill, 2008.