Gaya APA

WILLIAMSON, G., PAYNE, W. (1978). An introduction to animal husbandry in the tropics (Third edition.). New York: Longman.

Gaya MLA

WILLIAMSON, G.., PAYNE, W.J.A.. "An introduction to animal husbandry in the tropics". Third edition. New York: Longman, 1978. Buku.