National Research Council. (1976). Urea and other nonprotein nitrogen compounds in animal nutrition. National Academy of Science.
Chicago Style (17th ed.) CitationNational Research Council. Urea and Other Nonprotein Nitrogen Compounds in Animal Nutrition. Washington, D.C.: National Academy of Science, 1976.
MLA (9th ed.) CitationNational Research Council. Urea and Other Nonprotein Nitrogen Compounds in Animal Nutrition. National Academy of Science, 1976.