Citazione Stile APA (7a Edizione)

Schlenker, E. D., & Long, S. (2007). William's essentials of nutrition and diet therapy (9th ed.). Mosby/Elsevier.

Citazione stile Chigago Style (17a edizione)

Schlenker, Eleanor D., e Sara Long. William's Essentials of Nutrition and Diet Therapy. 9th ed. St. Louis, Mo: Mosby/Elsevier, 2007.

Citatione MLA (9a ed.)

Schlenker, Eleanor D., e Sara Long. William's Essentials of Nutrition and Diet Therapy. 9th ed. Mosby/Elsevier, 2007.