Gaya APA

Weideman, G, J. (1990). Weed Technology Vol. 4 No. 3 July - September 1990 (Vol. 4 No. 3). Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Weideman, Gregory, J.. "Weed Technology Vol. 4 No. 3 July - September 1990". Vol. 4 No. 3 Madison, Wisconsin, AS: Weed Sciences Society Of America, 1990. Text.