Cita APA

Plummer, C. C., Carlson, D. H., & McGeary, D. (1999). Physical geology (8. ed.). Boston: McGraw Hill.

Citación estilo Chicago

Plummer, Charles C., Diane H. Carlson, y David McGeary. Physical Geology. 8. ed. Boston: McGraw Hill, 1999.

Cita MLA

Plummer, Charles C., Diane H. Carlson, y David McGeary. Physical Geology. 8. ed. Boston: McGraw Hill, 1999.