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.
Trích dẫn kiểu Chicago (xuất bản lần thứ 7)Pacific Northwest Forest and Range Experiment Station (Portland, Or.), Robert W. Cowlin, và F. L. Moravets. Forest Resources of Washington. Olympia: Division of Forestry, Dept. of Conservation and Development, State of Washington, 1940.
Trích dẫn kiểu MLA (xuất bản lần thứ 8)Pacific 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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