National Research Council (U.S.). Subcommittee on Beef Cattle Nutrition & ebrary, Inc. (1996). Nutrient requirements of beef cattle (7th rev. ed.). National Academy Press.
芝加哥风格引文National Research Council (U.S.). Subcommittee on Beef Cattle Nutrition 与 Inc ebrary. Nutrient Requirements of Beef Cattle. 7th rev. ed. Washington, D.C.: National Academy Press, 1996.
MLA引文National Research Council (U.S.). Subcommittee on Beef Cattle Nutrition 与 Inc ebrary. Nutrient Requirements of Beef Cattle. 7th rev. ed. National Academy Press, 1996.
警告：这些引文格式不一定是100％准确.