APA

Campbell J. R., Lasley J. F., . (1969). The science of animals that serve mankind. New York: McGraw-Hill.

Chicago

Campbell John R, Lasley John Foster, . 1969. The science of animals that serve mankind. New York: McGraw-Hill.

Harvard

Campbell J. R., Lasley J. F., . (1969). The science of animals that serve mankind. New York: McGraw-Hill.

MLA

Campbell John R, Lasley John Foster, . The science of animals that serve mankind. New York: McGraw-Hill. 1969.