Gaya APA

Westberg, D, E. (1992). Weed Technology Vol. 6 No. 1 January - March 1992 (Vol. 6 No. 1). Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Westberg, Dan, E.. "Weed Technology Vol. 6 No. 1 January - March 1992". Vol. 6 No. 1 Madison, Wisconsin, AS: Weed Sciences Society Of America, 1992. Text.