Hult, R. E. (1992). Herb Crisler in the Olympic Mountain wilds (2nd ed.). Swallowtail Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रHult, Ruby El. Herb Crisler in the Olympic Mountain Wilds. 2nd ed. Puyallup, WA: Swallowtail Press, 1992.
एमएलए (8वां संस्करण) प्रशस्ति पत्रHult, Ruby El. Herb Crisler in the Olympic Mountain Wilds. 2nd ed. Swallowtail Press, 1992.
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