National Research Council (U.S.). Subcommittee on Beef Cattle Nutrition. (1996). Nutrient requirements of beef cattle (7th rev. ed.). National Academy Press.
Cita Chicago (17th ed.)National Research Council (U.S.). Subcommittee on Beef Cattle Nutrition. Nutrient Requirements of Beef Cattle. 7th rev. ed. Washington, D.C.: National Academy Press, 1996.
Cita MLA (9th ed.)National Research Council (U.S.). Subcommittee on Beef Cattle Nutrition. Nutrient Requirements of Beef Cattle. 7th rev. ed. National Academy Press, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.