MLA

Hughes, Langston, 1902-1967. Pogue, Florabelle. Box 8 (Oversize), folder 99. 1893-1954. https://collections.library.yale.edu/catalog/16198547.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 8 (Oversize), folder 99"])(1893-1954)[Pogue, Florabelle]. https://collections.library.yale.edu/catalog/16198547.