MLA

Kissinger, Henry, 1923-2023. Unidentified. Box 630, folder 16. 2001. https://collections.library.yale.edu/catalog/11780467.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 630, folder 16"])(2001)[Unidentified]. https://collections.library.yale.edu/catalog/11780467.