Gaya APA

Tingey, D, T. et al (1990). Journal Of Environmental Quality Vol. 19 No. 4 October - Desember 1990 (Vol. 19 No. 4). Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy.

Gaya MLA

Tingey, David, T.. et al. "Journal Of Environmental Quality Vol. 19 No. 4 October - Desember 1990". Vol. 19 No. 4 Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy, 1990. Text.