Cite

"The Middle Ages," printed version, Catholic Worker

MLA

McKay, Claude, 1890-1948. "The Middle Ages," printed version, Catholic Worker. Box 12, folder 376. 1946 May. https://collections.library.yale.edu/catalog/32268857.

APA, 6th edition

McKay, Claude, 1890-1948. (["Box 12, folder 376"])(1946 May)["The Middle Ages," printed version, Catholic Worker]. https://collections.library.yale.edu/catalog/32268857.