Dyfyniad APA

Brady, N. C. (2002). The nature and properties of soils. New Jersey: Prentice-Hall International.

Dyfyniad Arddull Chicago

Brady, Nyle C. The Nature and Properties of Soils. New Jersey: Prentice-Hall International, 2002.

Dyfyniad MLA

Brady, Nyle C. The Nature and Properties of Soils. New Jersey: Prentice-Hall International, 2002.

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