Dyfyniad APA

Dolgoff, A. (1996). Physical geology. D. C. Heath and Company.

Dyfyniad Arddull Chicago

Dolgoff, Anatole. Physical Geology. Lexington, Massachusetts: D. C. Heath and Company, 1996.

Dyfyniad MLA

Dolgoff, Anatole. Physical Geology. D. C. Heath and Company, 1996.

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