Dyfyniad APA

(1977). Minerals in soil environments. USA: Soil Science Society of American.

Dyfyniad Arddull Chicago

Minerals in Soil Environments. USA: Soil Science Society of American, 1977.

Dyfyniad MLA

Minerals in Soil Environments. USA: Soil Science Society of American, 1977.

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