Strong, E. M., Strong, R., Beals, H. K., & Lewis, M. (1995). Seeking western waters: The Lewis and Clark trail from the Rockies to the Pacific. Oregon Historical Society.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रStrong, Emory M., Ruth Strong, H. K. Beals, और Meriwether Lewis. Seeking Western Waters: The Lewis and Clark Trail from the Rockies to the Pacific. Portland: Oregon Historical Society, 1995.
एमएलए (8वां संस्करण) प्रशस्ति पत्रStrong, Emory M., et al. Seeking Western Waters: The Lewis and Clark Trail from the Rockies to the Pacific. Oregon Historical Society, 1995.
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