APA (7th ed.) Citation

Plummer, C. C. (2008). Physical geology twelfth edition. McGraw-Hill.

Chicago Style (17th ed.) Citation

Plummer, Charles C. Physical Geology Twelfth Edition. McGraw-Hill, 2008.

MLA (8th ed.) Citation

Plummer, Charles C. Physical Geology Twelfth Edition. McGraw-Hill, 2008.

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