"World map of some journeys taken by Langston Hughes 1924-1960 outside U.S.A."
MLA
Hughes, Langston, 1902-1967. "World map of some journeys taken by Langston Hughes 1924-1960 outside U.S.A.". Box 514, folder 12785. n.d.. https://collections.library.yale.edu/catalog/2018719.
APA, 6th edition
Hughes, Langston, 1902-1967. (["Box 514, folder 12785"])(n.d.)["World map of some journeys taken by Langston Hughes 1924-1960 outside U.S.A."]. https://collections.library.yale.edu/catalog/2018719.