Cite

"Cassanova [sic] at Antibes," typescript carbon

MLA

Butts, Mary, 1890-1937. "Cassanova [sic] at Antibes," typescript carbon. Box 6, folder 100. n.d.. https://collections.library.yale.edu/catalog/16586542.

APA, 6th edition

Butts, Mary, 1890-1937. (["Box 6, folder 100"])(n.d.)["Cassanova [sic] at Antibes," typescript carbon]. https://collections.library.yale.edu/catalog/16586542.