National Research Council (U.S.). Committee on Animal Nutrition & ebrary, Inc. (1989). Nutrient requirements of horses (5th rev. ed.). National Academy Press.
Chicago-referens (17:e uppl.)National Research Council (U.S.). Committee on Animal Nutrition och Inc ebrary. Nutrient Requirements of Horses. 5th rev. ed. Washington, D.C.: National Academy Press, 1989.
MLA-referens (9:e uppl.)National Research Council (U.S.). Committee on Animal Nutrition och Inc ebrary. Nutrient Requirements of Horses. 5th rev. ed. National Academy Press, 1989.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.