Geological Survey (U.S.), Manning, V. H., & Plummer, F. G. (1901). Washington-Idaho, Spokane quadrangle: Land classification and density of standing timber. The Survey.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.), Van H. Manning, और Fred G. Plummer. Washington-Idaho, Spokane Quadrangle: Land Classification and Density of Standing Timber. [Washington, D.C.]: The Survey, 1901.
एमएलए (8वां संस्करण) प्रशस्ति पत्रGeological Survey (U.S.), et al. Washington-Idaho, Spokane Quadrangle: Land Classification and Density of Standing Timber. The Survey, 1901.
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