Dyfyniad APA
Williams, S. R. (1994). Essentials of nutrition and diet therapy (6th ed.). Mosby.
Dyfyniad Arddull Chicago
Williams, Sue R. Essentials of Nutrition and Diet Therapy. 6th ed. St Louis,Baltimore: Mosby, 1994.
Dyfyniad MLA
Williams, Sue R. Essentials of Nutrition and Diet Therapy. 6th ed. Mosby, 1994.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.