APA Citation

Plummer, C. C., & McGeary, D. (1991). Physical geology (5. edition --.). United States of America: WM. C. Brown.

Chicago Style Citation

Plummer, Charles C., and David McGeary. Physical Geology. 5. edition --. United States of America: WM. C. Brown, 1991.

MLA Citation

Plummer, Charles C., and David McGeary. Physical Geology. 5. edition --. United States of America: WM. C. Brown, 1991.

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