"Related to E.P."
MLA
Rudge, Olga, 1895-1996. "Related to E.P.". Box 22, folder 761. 1980, n.d.. https://collections.library.yale.edu/catalog/17082126.
APA, 6th edition
Rudge, Olga, 1895-1996. (["Box 22, folder 761"])(1980, n.d.)["Related to E.P."]. https://collections.library.yale.edu/catalog/17082126.