Gaya APA

Riggle, B, D. (1988). Weed Socience Vol. 36 No. 2 March 1988 . Madison, Wisconsin, AS: Weed science Society of america.

Gaya MLA

Riggle, Bruce, D.. "Weed Socience Vol. 36 No. 2 March 1988". Madison, Wisconsin, AS: Weed science Society of america, 1988. Text.