Gaya APA

Ahrens, J. (1988). Weed Technology Vol. 2 No. 2 April 1988 . Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Ahrens, J.F.. "Weed Technology Vol. 2 No. 2 April 1988". Madison, Wisconsin, AS: Weed Sciences Society Of America, 1988. Text.