Wilson, C. W. (1970). Mapping the frontier: Charles Wilson's diary of the survey of the 49th parallel, 1858-1862, while secretary of the British Boundary Commission. University of Washington Press.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्रWilson, Charles William. Mapping the Frontier: Charles Wilson's Diary of the Survey of the 49th Parallel, 1858-1862, While Secretary of the British Boundary Commission. Seattle: University of Washington Press, 1970.
एमएलए (8वां संस्करण) प्रशस्ति पत्रWilson, Charles William. Mapping the Frontier: Charles Wilson's Diary of the Survey of the 49th Parallel, 1858-1862, While Secretary of the British Boundary Commission. University of Washington Press, 1970.
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