Gaya APA

Grant, N, T. (1990). Weed Technology Vol. 4 No. 4 October - December 1990 (Vol. 4 No. 4). Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Grant, Nelson, T.. "Weed Technology Vol. 4 No. 4 October - December 1990". Vol. 4 No. 4 Madison, Wisconsin, AS: Weed Sciences Society Of America, 1990. Text.