Gaya APA

James, W, , E., Edward, L, , J. (1979). Breeding and Improvement of Farm Animals (7th. Ed.). New York: McGrawHill Book company INC..

Gaya MLA

James, Warwick, , Everett., Edward, Legates, , James. "Breeding and Improvement of Farm Animals". 7th. Ed. New York: McGrawHill Book company INC., 1979. Text.