MLA

Kissinger, Henry, 1923-2023. Juster, Ken. Box 590, folder 6. 1993. https://collections.library.yale.edu/catalog/11779952.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 590, folder 6"])(1993)[Juster, Ken]. https://collections.library.yale.edu/catalog/11779952.