Gaya APA

Smith, R, J. (1988). Weed Technology Vol. 2 No. 3 July 1988 . Madison, Wisconsin, AS: Weed Sciences Society Of America.

Gaya MLA

Smith, Roy, J.. "Weed Technology Vol. 2 No. 3 July 1988". Madison, Wisconsin, AS: Weed Sciences Society Of America, 1988. Text.