Walsh,, & James, D. B. (1973). Soil testing and plant analysis (Rev.ed.). Madison, Wisconsin: Soil Science of America, Inc..
Chicago Style CitationWalsh,, and D. Beaton James. Soil Testing and Plant Analysis. Rev.ed. Madison, Wisconsin: Soil Science of America, Inc., 1973.
MLA CitationWalsh,, and D. Beaton James. Soil Testing and Plant Analysis. Rev.ed. Madison, Wisconsin: Soil Science of America, Inc., 1973.
Warning: These citations may not always be 100% accurate.