MLA

Kissinger, Henry, 1923-2023. Bo. Box 1, folder 10. 2001. https://collections.library.yale.edu/catalog/12481349.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 1, folder 10"])(2001)[Bo]. https://collections.library.yale.edu/catalog/12481349.