Dyfyniad APA

National Research Council (U.S.). Subcommittee on Sheep Nutrition. (1985). Nutrient requirements of sheep (6th rev. ed.). National Academy Press.

Dyfyniad Arddull Chicago

National Research Council (U.S.). Subcommittee on Sheep Nutrition. Nutrient Requirements of Sheep. 6th rev. ed. Washington, D.C.: National Academy Press, 1985.

Dyfyniad MLA

National Research Council (U.S.). Subcommittee on Sheep Nutrition. Nutrient Requirements of Sheep. 6th rev. ed. National Academy Press, 1985.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.