Dyfyniad APA

Jenny, H. (1941). Factors of soil for mation: A system of quantitative pedology. Mcgraw-Hill.

Dyfyniad Arddull Chicago

Jenny, Hans. Factors of Soil for Mation: A System of Quantitative Pedology. New York: Mcgraw-Hill, 1941.

Dyfyniad MLA

Jenny, Hans. Factors of Soil for Mation: A System of Quantitative Pedology. Mcgraw-Hill, 1941.

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