Knopf, Blanche W.
MLA
Hughes, Langston, 1902-1967. Knopf, Blanche W.. Box 97, folder 1823-1830. 1925-62, n.d.. https://collections.library.yale.edu/catalog/16613752.
APA, 6th edition
Hughes, Langston, 1902-1967. (["Box 97, folder 1823-1830"])(1925-62, n.d.)[Knopf, Blanche W.]. https://collections.library.yale.edu/catalog/16613752.