MLA

Kissinger, Henry, 1923-2023. J. Box 590, folder 5. 1993. https://collections.library.yale.edu/catalog/11779951.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 590, folder 5"])(1993)[J]. https://collections.library.yale.edu/catalog/11779951.