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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Wilson, 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Wilson, 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.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.