United States. Bureau of Chemistry and Soils, Edwards, M. J., & Geib, W. J. (1931). Soil survey of Manitowoc County, Wis. U.S. GPO.
Chicago Style (17th ed.) CitationUnited States. Bureau of Chemistry and Soils, M. J. Edwards, and W. J. Geib. Soil Survey of Manitowoc County, Wis. Washington: U.S. GPO, 1931.
MLA (9th ed.) CitationUnited States. Bureau of Chemistry and Soils, et al. Soil Survey of Manitowoc County, Wis. U.S. GPO, 1931.
Warning: These citations may not always be 100% accurate.