Pacific Northwest Forest and Range Experiment Station (Portland, Or.), Cowlin, R. W., & Moravets, F. L. (1940). Forest resources of Washington. Division of Forestry, Dept. of Conservation and Development, State of Washington.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रPacific Northwest Forest and Range Experiment Station (Portland, Or.), Robert W. Cowlin, और F. L. Moravets. Forest Resources of Washington. Olympia: Division of Forestry, Dept. of Conservation and Development, State of Washington, 1940.
एमएलए (8वां संस्करण) प्रशस्ति पत्रPacific Northwest Forest and Range Experiment Station (Portland, Or.), et al. Forest Resources of Washington. Division of Forestry, Dept. of Conservation and Development, State of Washington, 1940.
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