MLA

Du Bois, W. E. B. (William Edward Burghardt), 1868-1963. Draft, typescript carbon, corrected. Box 2, folder 41. n.d.. https://collections.library.yale.edu/catalog/16732023.

APA, 6th edition

Du Bois, W. E. B. (William Edward Burghardt), 1868-1963. (["Box 2, folder 41"])(n.d.)[Draft, typescript carbon, corrected]. https://collections.library.yale.edu/catalog/16732023.