Swanson, J. P., Parrish, B. D., & Peterson, A. W. (1949). Economic land use classification for Spokane County. State College of Washington, Agricultural Experiment Station].
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSwanson, Jay P., Barnard D. Parrish, और Arthur W. Peterson. Economic Land Use Classification for Spokane County. [Pullman, Wash.: State College of Washington, Agricultural Experiment Station], 1949.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSwanson, Jay P., et al. Economic Land Use Classification for Spokane County. State College of Washington, Agricultural Experiment Station], 1949.
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