Chance, D. H. (1981). Sentinel of silence: A brief history of Fort Spokane. Pacific Northwest National Parks Association.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रChance, David H. Sentinel of Silence: A Brief History of Fort Spokane. [United States]: Pacific Northwest National Parks Association, 1981.
एमएलए (8वां संस्करण) प्रशस्ति पत्रChance, David H. Sentinel of Silence: A Brief History of Fort Spokane. Pacific Northwest National Parks Association, 1981.
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