Hosterman, J. W. (1969). Clay deposits of Spokane County, Washington. U.S. Govt. Print. Off..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHosterman, John W. Clay Deposits of Spokane County, Washington. Washington: U.S. Govt. Print. Off., 1969.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHosterman, John W. Clay Deposits of Spokane County, Washington. U.S. Govt. Print. Off., 1969.
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