Gaya APA

Leys, A, W. (1988). Weed Socience Vol.36 No. 1 1988 January . Madison, Wisconsin, AS: Weed science Society of america.

Gaya MLA

Leys, Andrew, W.. "Weed Socience Vol.36 No. 1 1988 January". Madison, Wisconsin, AS: Weed science Society of america, 1988. Text.