Colasurdo, C. (1997). Return to Spirit Lake: Journey through a lost landscape. Sasquatch Books.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रColasurdo, Christine. Return to Spirit Lake: Journey Through a Lost Landscape. Seattle, WA: Sasquatch Books, 1997.
एमएलए (8वां संस्करण) प्रशस्ति पत्रColasurdo, Christine. Return to Spirit Lake: Journey Through a Lost Landscape. Sasquatch Books, 1997.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.