Plummer, C. C., & McGeary, D. (1996). Physical geology: With interactive plate tectonics CD-ROM (7th ed.). Wm. C. Brown.
Cita Chicago (17th ed.)Plummer, Charles C., i David McGeary. Physical Geology: With Interactive Plate Tectonics CD-ROM. 7th ed. Dubuque, Iowa: Wm. C. Brown, 1996.
Cita MLA (9th ed.)Plummer, Charles C., i David McGeary. Physical Geology: With Interactive Plate Tectonics CD-ROM. 7th ed. Wm. C. Brown, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.