MLA

Hughes, Langston, 1902-1967. Butterbeans & Susie (Musical group). Box 2 (Oversize), folder 24. 1893-1954. https://collections.library.yale.edu/catalog/16195313.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 2 (Oversize), folder 24"])(1893-1954)[Butterbeans & Susie (Musical group)]. https://collections.library.yale.edu/catalog/16195313.