MLA

Luhan, Mabel Dodge, 1879-1962. Portraits. Box 64, folder 1728. [ca 1900-10]. https://collections.library.yale.edu/catalog/2008202.

APA, 6th edition

Luhan, Mabel Dodge, 1879-1962. (["Box 64, folder 1728"])([ca 1900-10])[Portraits]. https://collections.library.yale.edu/catalog/2008202.