Cita APA (7a ed.)

Plummer, C. C., & Carlson, D. H. (2005). Physical geology (10h ed.). McGraw-Hill.

Cita Chicago Style (17a ed.)

Plummer, Charles C., y Diane H. Carlson. Physical Geology. 10h ed. New York: McGraw-Hill, 2005.

Cita MLA (9a ed.)

Plummer, Charles C., y Diane H. Carlson. Physical Geology. 10h ed. McGraw-Hill, 2005.