Gaya APA

Swartzendruber, D., Hogarth, W, L. (1991). Soil Science Society of America Journal Vol. 55 No. 6 November-Desember 1991 (Vol. 55 No. 6). Madison, Wisconsin, AS: .

Gaya MLA

Swartzendruber, D.., Hogarth, W., L. "Soil Science Society of America Journal Vol. 55 No. 6 November-Desember 1991". Vol. 55 No. 6 Madison, Wisconsin, AS: , 1991. Text.