Sierra Club. Upper Columbia River Group, Leon, R., Buckham, M. E., & Buckham, J. (1988). Spokane trail guide #2. Sierra Club-Spokane Group.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रSierra Club. Upper Columbia River Group, Rich Leon, M. E. Buckham, और Jim Buckham. Spokane Trail Guide #2. Spokane, Wash.: Sierra Club-Spokane Group, 1988.
एमएलए (8वां संस्करण) प्रशस्ति पत्रSierra Club. Upper Columbia River Group, et al. Spokane Trail Guide #2. Sierra Club-Spokane Group, 1988.
चेतावनी: ये उद्धरण हमेशा 100% सटीक नहीं हो सकते हैं.