Cite This Item
MLA
Du Bois, W. E. B. (William Edward Burghardt). Addition problem. [1915?]. Web. 19 Apr 2024. <http://credo.library.umass.edu/view/full/mums312-b158-i112>.
APA
Du Bois, W. E. B. (William Edward Burghardt). ([1915?]). Addition problem [Manuscript]. Retrieved from http://credo.library.umass.edu/view/full/mums312-b158-i112
Chicago
Du Bois, W. E. B. (William Edward Burghardt). "Addition problem." Manuscript. [1915?]. Digital Commonwealth, http://credo.library.umass.edu/view/full/mums312-b158-i112 (accessed April 19, 2024).