MLA

Hughes, Langston, 1902-1967. Courtney, Augusta Bird. Box 3 (Oversize), folder 38. 1893-1954. https://collections.library.yale.edu/catalog/16195672.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 3 (Oversize), folder 38"])(1893-1954)[Courtney, Augusta Bird]. https://collections.library.yale.edu/catalog/16195672.