MLA

Kissinger, Henry, 1923-2023. Ca. Box 117, folder 5. 2006. https://collections.library.yale.edu/catalog/12479508.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 117, folder 5"])(2006)[Ca]. https://collections.library.yale.edu/catalog/12479508.