Townsend, J. K. (1840). Sporting excursions in the Rocky mountains including a journey to the Columbia river, and a visit to the Sandwich islands, Chili, etc. H. Colburn.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रTownsend, John Kirk. Sporting Excursions in the Rocky Mountains Including a Journey to the Columbia River, and a Visit to the Sandwich Islands, Chili, Etc. London: H. Colburn, 1840.
एमएलए (8वां संस्करण) प्रशस्ति पत्रTownsend, John Kirk. Sporting Excursions in the Rocky Mountains Including a Journey to the Columbia River, and a Visit to the Sandwich Islands, Chili, Etc. H. Colburn, 1840.
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