Dyfyniad APA

Montgomery, C. W. (1986). Environmental geology. W.C. Brown Publishers.

Dyfyniad Arddull Chicago

Montgomery, Carla W. Environmental Geology. Dubuque, Iowa: W.C. Brown Publishers, 1986.

Dyfyniad MLA

Montgomery, Carla W. Environmental Geology. W.C. Brown Publishers, 1986.

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