MLA

Knott, Frederick (1916-2002). Clippings, foreign languages. Box 12, folder 97-99. 1952-1955, undated. https://collections.library.yale.edu/catalog/2021506.

APA, 6th edition

Knott, Frederick (1916-2002). (["Box 12, folder 97-99"])(1952-1955, undated)[Clippings, foreign languages]. https://collections.library.yale.edu/catalog/2021506.