MLA

Kissinger, Henry, 1923-2023. Books. Box 133, folder 3. 1967. https://collections.library.yale.edu/catalog/11784682.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 133, folder 3"])(1967)[Books]. https://collections.library.yale.edu/catalog/11784682.