Dyfyniad APA

Monroe, J. S., & Wicander, R. (1997). The changing earth: Exploring geology and evolution (2nd ed.). Wadsworth Pub.

Dyfyniad Arddull Chicago

Monroe, James S., and Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Belmont, Calif: Wadsworth Pub, 1997.

Dyfyniad MLA

Monroe, James S., and Reed Wicander. The Changing Earth: Exploring Geology and Evolution. 2nd ed. Wadsworth Pub, 1997.

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