Beckey, F. (2003). Range of glaciers: The exploration and survey of the northern Cascade Range. Oregon Historical Society Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रBeckey, Fred. Range of Glaciers: The Exploration and Survey of the Northern Cascade Range. Portland, Or.: Oregon Historical Society Press, 2003.
एमएलए (8वां संस्करण) प्रशस्ति पत्रBeckey, Fred. Range of Glaciers: The Exploration and Survey of the Northern Cascade Range. Oregon Historical Society Press, 2003.
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