MLA

Kagan, Paul, 1943-1993. Miscellaneous clippings. Box 13, folder 251-252. 1937-45. https://collections.library.yale.edu/catalog/16355062.

APA, 6th edition

Kagan, Paul, 1943-1993. (["Box 13, folder 251-252"])(1937-45)[Miscellaneous clippings]. https://collections.library.yale.edu/catalog/16355062.