APA (7th ed.) Citation

Plummer, C. C., & McGeary, D. (1988). Physical geology (4. ed.). Brown.

Chicago Style (17th ed.) Citation

Plummer, Charles C., and David McGeary. Physical Geology. 4. ed. Dubuque, Iowa: Brown, 1988.

MLA (9th ed.) Citation

Plummer, Charles C., and David McGeary. Physical Geology. 4. ed. Brown, 1988.