Dyfyniad APA

JENNY, H. 1. (1980). The Soil resource: Origin and behavior. Springer-Verlag.

Dyfyniad Arddull Chicago

JENNY, Hans 1899. The Soil Resource: Origin and Behavior. New York: Springer-Verlag, 1980.

Dyfyniad MLA

JENNY, Hans 1899. The Soil Resource: Origin and Behavior. Springer-Verlag, 1980.

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