MLA

Serge, Victor, 1890-1947. [Lambert, George], typescript. Box 13, folder 465. 1937 Jan 27. https://collections.library.yale.edu/catalog/16495487.

APA, 6th edition

Serge, Victor, 1890-1947. (["Box 13, folder 465"])(1937 Jan 27)[[Lambert, George], typescript]. https://collections.library.yale.edu/catalog/16495487.