MLA

Wilson, Edmund, 1895-1972. Callaghan, Morley. Box 14, folder 328-331. 1960-71, n.d.. https://collections.library.yale.edu/catalog/17083219.

APA, 6th edition

Wilson, Edmund, 1895-1972. (["Box 14, folder 328-331"])(1960-71, n.d.)[Callaghan, Morley]. https://collections.library.yale.edu/catalog/17083219.