Stockman, R. L., & Hildebrandt, P. W. (1961). Evaluation of air pollution in the Greater Spokane Area, Spokane, Washington. Spokane County Planning Commission.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStockman, Robert L., और Peter W. Hildebrandt. Evaluation of Air Pollution in the Greater Spokane Area, Spokane, Washington. [Spokane, Wash.]: Spokane County Planning Commission, 1961.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStockman, Robert L., और Peter W. Hildebrandt. Evaluation of Air Pollution in the Greater Spokane Area, Spokane, Washington. Spokane County Planning Commission, 1961.
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