MLA

Fitzgerald, Robert, 1910-1985. Ford Foundation. Box 12, folder 470-471. 1958-66. https://collections.library.yale.edu/catalog/17427380.

APA, 6th edition

Fitzgerald, Robert, 1910-1985. (["Box 12, folder 470-471"])(1958-66)[Ford Foundation]. https://collections.library.yale.edu/catalog/17427380.