Gaya APA

Powers, R, F. (1996). Soil Science Society of America Journal Vol. 60 No. 6 November - December 1996 (vol. 60 No. 6). Madison, Wisconsin, AS: Soil Science Socity of America.

Gaya MLA

Powers, R., F.. "Soil Science Society of America Journal Vol. 60 No. 6 November - December 1996". vol. 60 No. 6 Madison, Wisconsin, AS: Soil Science Socity of America, 1996. Text.