Gaya APA

Goodrich, J, A. (1991). Journal Of Environmental Quality Vol. 20 No. 4 October - December 1991 . Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy.

Gaya MLA

Goodrich, James, A.. "Journal Of Environmental Quality Vol. 20 No. 4 October - December 1991". Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy, 1991. Text.