Duyff, R. L., & Hasler, D. Nutrition & wellness.
Cita Chicago (17th ed.)Duyff, Roberta Larson, i Doris Hasler. Nutrition & Wellness.
Cita MLA (8th ed.)Duyff, Roberta Larson, i Doris Hasler. Nutrition & Wellness.
Atenció: Aquestes cites poden no estar 100% correctes.