MLA

Luhan, Mabel Dodge, 1879-1962. Wearing serape. Box 64, folder 1732. [ca. 1917]. https://collections.library.yale.edu/catalog/12234897.

APA, 6th edition

Luhan, Mabel Dodge, 1879-1962. (["Box 64, folder 1732"])([ca. 1917])[Wearing serape]. https://collections.library.yale.edu/catalog/12234897.