Fitzpatrick, E. G., Boatright, W. C., & Rose, L. E. (1939). Soil survey, Garfield County, Oklahoma. United States Department of Agriculture, Agricultural Research Administration, Bureau of Chemistry and Soils in cooperation with the Oklahoma Agricultural Experiment Station.
Chicago Style (17th ed.) CitationFitzpatrick, Elmer Grant, William Carl Boatright, and L. E. Rose. Soil Survey, Garfield County, Oklahoma. Washington: United States Department of Agriculture, Agricultural Research Administration, Bureau of Chemistry and Soils in cooperation with the Oklahoma Agricultural Experiment Station, 1939.
MLA (9th ed.) CitationFitzpatrick, Elmer Grant, et al. Soil Survey, Garfield County, Oklahoma. United States Department of Agriculture, Agricultural Research Administration, Bureau of Chemistry and Soils in cooperation with the Oklahoma Agricultural Experiment Station, 1939.