Gaya APA

Morrison, I, N. (1989). Weed Technology Vol. 3 No. 4 October - December 1989 (Vol. 3 No. 4). Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Morrison, IAN., N.. "Weed Technology Vol. 3 No. 4 October - December 1989". Vol. 3 No. 4 Madison, Wisconsin, AS: Weed Sciences Society Of America, 1989. Text.