Blewett, S. (1989). A history of the Washington Water Power Company, 1889-1989: Building on a century of service. Washington Water Power Co..
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBlewett, Steve. A History of the Washington Water Power Company, 1889-1989: Building on a Century of Service. Spokane, Wash.: Washington Water Power Co., 1989.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBlewett, Steve. A History of the Washington Water Power Company, 1889-1989: Building on a Century of Service. Washington Water Power Co., 1989.
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