LH at lecture engagement (in Series XII)
MLA
Hughes, Langston, 1902-1967. LH at lecture engagement (in Series XII). Box 633, folder 14224. n.d.. https://collections.library.yale.edu/catalog/32407241.
APA, 6th edition
Hughes, Langston, 1902-1967. (["Box 633, folder 14224"])(n.d.)[LH at lecture engagement (in Series XII)]. https://collections.library.yale.edu/catalog/32407241.