MLA

Hughes, Langston, 1902-1967. Alberti, Rafael. Box 4, folder 61. 1935. https://collections.library.yale.edu/catalog/32466792.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 4, folder 61"])(1935)[Alberti, Rafael]. https://collections.library.yale.edu/catalog/32466792.