Gaya APA

Hilton, J, L. (1990). Weed Socience Vol. 38 No. 3 May 1990 . Madison, Wisconsin, AS: Weed science Society of america.

Gaya MLA

Hilton, James, L.. "Weed Socience Vol. 38 No. 3 May 1990". Madison, Wisconsin, AS: Weed science Society of america, 1990. Text.