Johnson, E. P. (1990). Soil survey of Ogemaw County, Michigan. U.S. Dept. of Agriculture, Soil Conservation Service.
Chicago Style (17th ed.) CitationJohnson, Erik P. Soil Survey of Ogemaw County, Michigan. [Washington, D.C.?]: U.S. Dept. of Agriculture, Soil Conservation Service, 1990.
MLA (9th ed.) CitationJohnson, Erik P. Soil Survey of Ogemaw County, Michigan. U.S. Dept. of Agriculture, Soil Conservation Service, 1990.
Warning: These citations may not always be 100% accurate.