United States. Soil Conservation Service & Oregon State University. Agricultural Experiment Station. (1985). Soil survey of Union County area, Oregon. The Service.
Chicago Style (17th ed.) CitationUnited States. Soil Conservation Service and Oregon State University. Agricultural Experiment Station. Soil Survey of Union County Area, Oregon. [Washington, D.C.?]: The Service, 1985.
MLA (9th ed.) CitationUnited States. Soil Conservation Service and Oregon State University. Agricultural Experiment Station. Soil Survey of Union County Area, Oregon. The Service, 1985.
Warning: These citations may not always be 100% accurate.