Gaya APA

Sucoff, E. et al (1990). Journal Of Environmental Quality Vol. 19 No. 2 April - June 1990 (Vol. 19 No. 2). Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy.

Gaya MLA

Sucoff, Edward. et al. "Journal Of Environmental Quality Vol. 19 No. 2 April - June 1990". Vol. 19 No. 2 Madison, Wisconsin, AS: Cooperatively by The American Society Of Agronomy, 1990. Text.