APA
McDonald P., . (1981). The biochemistry of silage. New York: Wiley.
Chicago
McDonald Peter, . 1981. The biochemistry of silage. New York: Wiley.
Harvard
McDonald P., . (1981). The biochemistry of silage. New York: Wiley.
MLA
McDonald Peter, . The biochemistry of silage. New York: Wiley. 1981.