Washington Agricultural Experiment Station & Gilkeson, R. A. (1958). Soil map of the Columbia Basin project--Washington. Washington Agricultural Experiment Stations, Institute of Agricultural Sciences, State College of Washington.
Style de citation Chicago (17e éd.)Washington Agricultural Experiment Station et Raymond Allen Gilkeson. Soil Map of the Columbia Basin Project--Washington. [Pullman, Wash.?: Washington Agricultural Experiment Stations, Institute of Agricultural Sciences, State College of Washington, 1958.
Style de citation MLA (8e éd.)Washington Agricultural Experiment Station et Raymond Allen Gilkeson. Soil Map of the Columbia Basin Project--Washington. Washington Agricultural Experiment Stations, Institute of Agricultural Sciences, State College of Washington, 1958.