Cita APA (7th ed.)

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

Cita Chicago (17th ed.)

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

Cita MLA (9th ed.)

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