APA (7th ed.) Citation

LaVan, M. R. (1992). Soil survey of Jackson County, Iowa. Soil Conservation Service.

Chicago Style (17th ed.) Citation

LaVan, Mark R. Soil Survey of Jackson County, Iowa. [Washington, D.C.?]: Soil Conservation Service, 1992.

MLA (9th ed.) Citation

LaVan, Mark R. Soil Survey of Jackson County, Iowa. Soil Conservation Service, 1992.

Warning: These citations may not always be 100% accurate.