MLA

Luhan, Mabel Dodge, 1879-1962. Vanderbilt, Ollie. Box 36, folder 1036-1037. 1942-52, n.d.. https://collections.library.yale.edu/catalog/32196992.

APA, 6th edition

Luhan, Mabel Dodge, 1879-1962. (["Box 36, folder 1036-1037"])(1942-52, n.d.)[Vanderbilt, Ollie]. https://collections.library.yale.edu/catalog/32196992.