APA استشهاد

Whitney, E. N., & Rolfes, S. R. Understanding nutrition (Fourteenth edition.). Cengage Learning.

استشهاد بنمط شيكاغو

Whitney, Eleanor Noss, و Sharon Rady Rolfes. Understanding Nutrition. Fourteenth edition. Australia: Cengage Learning.

MLA استشهاد

Whitney, Eleanor Noss, و Sharon Rady Rolfes. Understanding Nutrition. Fourteenth edition. Cengage Learning.