Dyfyniad APA

Wang, H. (2015). Soil quality, soil fertility and land management. Callisto Reference.

Dyfyniad Arddull Chicago

Wang, Henry. Soil Quality, Soil Fertility and Land Management. New York: Callisto Reference, 2015.

Dyfyniad MLA

Wang, Henry. Soil Quality, Soil Fertility and Land Management. Callisto Reference, 2015.

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