MLA

Wilson, Edmund, 1895-1972. Wilson, Marcia Ruiz. Box 75, folder 2058-2060. 1963-1972, n.d.. https://collections.library.yale.edu/catalog/17083240.

APA, 6th edition

Wilson, Edmund, 1895-1972. (["Box 75, folder 2058-2060"])(1963-1972, n.d.)[Wilson, Marcia Ruiz]. https://collections.library.yale.edu/catalog/17083240.