Dyfyniad APA

Whitney, E. N., & Rolfes, S. R. (1999). Understanding nutrition (8th ed.). West/Wadsworth.

Dyfyniad Arddull Chicago

Whitney, Eleanor Noss, and Sharon Rady Rolfes. Understanding Nutrition. 8th ed. Belmont: West/Wadsworth, 1999.

Dyfyniad MLA

Whitney, Eleanor Noss, and Sharon Rady Rolfes. Understanding Nutrition. 8th ed. West/Wadsworth, 1999.

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