Gaya APA

Abernathy, J, R. (1991). Weed Technology Vol. 5 No. 4 October - December 1991 (Vol. 5 No. 4). Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Abernathy, J., R.. "Weed Technology Vol. 5 No. 4 October - December 1991". Vol. 5 No. 4 Madison, Wisconsin, AS: Weed Sciences Society Of America, 1991. Text.