Adminstrative File
MLA
Wolff, Kurt, 1887-1963. Adminstrative File. Box 11, folder 420. n.d.. https://collections.library.yale.edu/catalog/31906996.
APA, 6th edition
Wolff, Kurt, 1887-1963. (["Box 11, folder 420"])(n.d.)[Adminstrative File]. https://collections.library.yale.edu/catalog/31906996.