Dyfyniad APA

Dietrich, R. V., & Wicander, R. (1983). Minerals, rocks, and fossils. John Wiley.

Dyfyniad Arddull Chicago

Dietrich, Richard Vincent, and Reed Wicander. Minerals, Rocks, and Fossils. New York: John Wiley, 1983.

Dyfyniad MLA

Dietrich, Richard Vincent, and Reed Wicander. Minerals, Rocks, and Fossils. John Wiley, 1983.

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