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].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रFranklin, Jerry F., और 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.
एमएलए (8वां संस्करण) प्रशस्ति पत्रFranklin, Jerry F., और 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.