Dyfyniad APA

International Association of Geochemistry and Cosmochemistry & Siegel, F. R. (1979). Review of research on modern problems in geochemistry. Unesco.

Dyfyniad Arddull Chicago

International Association of Geochemistry and Cosmochemistry and Frederic R. Siegel. Review of Research on Modern Problems in Geochemistry. Paris: Unesco, 1979.

Dyfyniad MLA

International Association of Geochemistry and Cosmochemistry and Frederic R. Siegel. Review of Research on Modern Problems in Geochemistry. Unesco, 1979.

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