Dyfyniad APA
ebrary, Inc. (1985). Nutrient requirements of sheep (6th rev. ed.). National Academy of Press.
Dyfyniad Arddull Chicago
ebrary, Inc. Nutrient Requirements of Sheep. 6th rev. ed. Washington, D.C.: National Academy of Press, 1985.
Dyfyniad MLA
ebrary, Inc. Nutrient Requirements of Sheep. 6th rev. ed. National Academy of Press, 1985.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.