MLA

Kissinger, Henry, 1923-2023. Wh. Box 420, folder 9. 1978. https://collections.library.yale.edu/catalog/11777586.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 420, folder 9"])(1978)[Wh]. https://collections.library.yale.edu/catalog/11777586.