Butts, Frederick John
MLA
Butts, Mary, 1890-1937. Butts, Frederick John. Box 20, folder 295. [ca. 1940s]. https://collections.library.yale.edu/catalog/2077312.
APA, 6th edition
Butts, Mary, 1890-1937. (["Box 20, folder 295"])([ca. 1940s])[Butts, Frederick John]. https://collections.library.yale.edu/catalog/2077312.