Geological Survey (U.S.), Manning, V. H., & Plummer, F. G. (1901). Washington-Idaho, Spokane quadrangle: Land classification and density of standing timber. The Survey.
Chicago Style (17th ed.) CitationGeological Survey (U.S.), Van H. Manning, and Fred G. Plummer. Washington-Idaho, Spokane Quadrangle: Land Classification and Density of Standing Timber. [Washington, D.C.]: The Survey, 1901.
MLA (8th ed.) CitationGeological Survey (U.S.), et al. Washington-Idaho, Spokane Quadrangle: Land Classification and Density of Standing Timber. The Survey, 1901.
Warning: These citations may not always be 100% accurate.