Gaya APA

Kaplan, D, I. et al (1990). Journal Of Environmental Quality Vol. 19 No. 3 July - September 1990 (Vol. 19 No. 3). Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy.

Gaya MLA

Kaplan, D., I.. et al. "Journal Of Environmental Quality Vol. 19 No. 3 July - September 1990". Vol. 19 No. 3 Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy, 1990. Text.