MLA

Hughes, Langston, 1902-1967. Lieber, Maxim. Box 103, folder 1937-1947. 1944-67, n.d.. https://collections.library.yale.edu/catalog/32585423.

APA, 6th edition

Hughes, Langston, 1902-1967. (["Box 103, folder 1937-1947"])(1944-67, n.d.)[Lieber, Maxim]. https://collections.library.yale.edu/catalog/32585423.