Cita APA (7th ed.)

Carlson, D. H., Plummer, C. C., & McGeary, D. (2006). Physical Geology: Earth revealed (6th ed.). McGraw - Hill.

Cita Chicago (17th ed.)

Carlson, Diane H., Charles C. Plummer, i David McGeary. Physical Geology: Earth Revealed. 6th ed. Boston: McGraw - Hill, 2006.

Cita MLA (9th ed.)

Carlson, Diane H., et al. Physical Geology: Earth Revealed. 6th ed. McGraw - Hill, 2006.