APA

Owen J. b., . (1981). Sheep production. London: The english language book society.

Chicago

Owen John b, . 1981. Sheep production. London: The english language book society.

Harvard

Owen J. b., . (1981). Sheep production. London: The english language book society.

MLA

Owen John b, . Sheep production. London: The english language book society. 1981.