Larrison, E. J. (1976). Mammals of the Northwest: Washington, Oregon, Idaho, and British Columbia. Seattle Audubon Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रLarrison, Earl J. Mammals of the Northwest: Washington, Oregon, Idaho, and British Columbia. [Seattle]: Seattle Audubon Society, 1976.
एमएलए (8वां संस्करण) प्रशस्ति पत्रLarrison, Earl J. Mammals of the Northwest: Washington, Oregon, Idaho, and British Columbia. Seattle Audubon Society, 1976.
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