Franklin, J. F., & Dyrness, C. T. (1973). Natural vegetation of Oregon and Washington. Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington].
Style de citation Chicago (17e éd.)Franklin, Jerry F., et C. T. Dyrness. Natural Vegetation of Oregon and Washington. Portland, Or.: Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington], 1973.
Style de citation MLA (8e éd.)Franklin, Jerry F., et C. T. Dyrness. Natural Vegetation of Oregon and Washington. Pacific Northwest Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture [for sale by the Supt. of Docs., U.S. Govt. Print. Off., Washington], 1973.