Gaya APA

Guerrini, I, A. (1992). Soil Science Society of America Journal Vol. 56 No. 2 March - April 1992 (Vol. 56 No. 2). Madison, Wisconsin, AS: Soil Science Socity of America.

Gaya MLA

Guerrini, Ivan, A.. "Soil Science Society of America Journal Vol. 56 No. 2 March - April 1992". Vol. 56 No. 2 Madison, Wisconsin, AS: Soil Science Socity of America, 1992. Text.