MLA

Luhan, Mabel Dodge, 1879-1962. Typescript carbon, corrected. Box 44, folder 1370. 1913 Jan. https://collections.library.yale.edu/catalog/10189990.

APA, 6th edition

Luhan, Mabel Dodge, 1879-1962. (["Box 44, folder 1370"])(1913 Jan)[Typescript carbon, corrected]. https://collections.library.yale.edu/catalog/10189990.