Cita APA (7th ed.)

Whitney, E., & Rolfes, S. R. (2008). Understanding nutrition (11th ed.). Thomson.

Cita Chicago (17th ed.)

Whitney, Ellie, i Sharon Rady Rolfes. Understanding Nutrition. 11th ed. Belmont, Calif.: Thomson, 2008.

Cita MLA (9th ed.)

Whitney, Ellie, i Sharon Rady Rolfes. Understanding Nutrition. 11th ed. Thomson, 2008.