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MLA

Roberta Larson Duyff, and United States Department of Agriculture. Human Nutrition Information Service. "Dietary Guidelines and Your Health : Health Educator's Guide to Nutrition and Fitness." , online. Print

APA

Roberta Larson Duyff, R. Larson Duyff, & United States Department of Agriculture. Human Nutrition Information Service, U. States Department of Agriculture. Human Nutrition Information Service. (1992). Dietary guidelines and your health : health educator's guide to nutrition and fitness.

Chicago

Roberta Larson Duyff, and United States Department of Agriculture. Human Nutrition Information Service. "Dietary guidelines and your health : health educator's guide to nutrition and fitness" (1992): online.