Duyff, R. L., Giarratano-Russell, S., & Zuzich, M. F. (1995). Nutrition, health, and safety for preschool children. Glencoe.
Chicago-viite (17. p.)Duyff, Roberta Larson, Susan Giarratano-Russell, ja Mary F. Zuzich. Nutrition, Health, and Safety for Preschool Children. New York: Glencoe, 1995.
MLA-viite (8. p.)Duyff, Roberta Larson, et al. Nutrition, Health, and Safety for Preschool Children. Glencoe, 1995.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.