Gaya APA

W, S. (1989). Soil Science Society Of America Journal Vol. 53 No. 4 July - August 1989 . Madison, Wisconsin, AS: Soil Science Society of America, Inc..

Gaya MLA

W, Scott. "Soil Science Society Of America Journal Vol. 53 No. 4 July - August 1989". Madison, Wisconsin, AS: Soil Science Society of America, Inc., 1989. Text.