Cita APA (7th ed.)
McGeary, D., Plummer, C. C., & Carlson, D. H. (2004). Physical geology: Earth revealed (5th ed.). McGraw-Hill.
Cita Chicago (17th ed.)
McGeary, David, Charles C. Plummer, i Diane H. Carlson. Physical Geology: Earth Revealed. 5th ed. Boston: McGraw-Hill, 2004.
Cita MLA (9th ed.)
McGeary, David, et al. Physical Geology: Earth Revealed. 5th ed. McGraw-Hill, 2004.
Atenció: Aquestes cites poden no estar 100% correctes.