Dyfyniad APA

Wedephol, K. H., & Athaus, E. (1971). Geochemistry. Holt, Rinehart and Winston, Inc.

Dyfyniad Arddull Chicago

Wedephol, Karl Hans, and Egon Athaus. Geochemistry. New York: Holt, Rinehart and Winston, Inc, 1971.

Dyfyniad MLA

Wedephol, Karl Hans, and Egon Athaus. Geochemistry. Holt, Rinehart and Winston, Inc, 1971.

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