Dyfyniad APA

McGeary, D., & Plummer, C. C. (1992). Physical geology: Earth revealed. Wm. C. Brown.

Dyfyniad Arddull Chicago

McGeary, David, and Charles C. Plummer. Physical Geology: Earth Revealed. Boulevard: Wm. C. Brown, 1992.

Dyfyniad MLA

McGeary, David, and Charles C. Plummer. Physical Geology: Earth Revealed. Wm. C. Brown, 1992.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.