Gaya APA

Clothier, B, E. (1990). Soil Science Society of America Journal Vol. 54 No. 2 March - April 1990 (Vol. 54 No. 2). Madison, Wisconsin, AS: Wiley.

Gaya MLA

Clothier, B., E.. "Soil Science Society of America Journal Vol. 54 No. 2 March - April 1990". Vol. 54 No. 2 Madison, Wisconsin, AS: Wiley, 1990. Text.