MLA

Serge, Victor, 1890-1947. "Écrivains français," typescript, corrected. Box 13, folder 461. n.d.. https://collections.library.yale.edu/catalog/16495486.

APA, 6th edition

Serge, Victor, 1890-1947. (["Box 13, folder 461"])(n.d.)["Écrivains français," typescript, corrected]. https://collections.library.yale.edu/catalog/16495486.