MLA

Kissinger, Henry, 1923-2023. Ba. Box 614, folder 3. 1957. https://collections.library.yale.edu/catalog/11780260.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 614, folder 3"])(1957)[Ba]. https://collections.library.yale.edu/catalog/11780260.