MLA

Kissinger, Henry, 1923-2023. Bo. Box 11, folder 5. 2003. https://collections.library.yale.edu/catalog/12480280.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 11, folder 5"])(2003)[Bo]. https://collections.library.yale.edu/catalog/12480280.