MLA

Kissinger, Henry, 1923-2023. He-Ho. Box 615, folder 7. 1999. https://collections.library.yale.edu/catalog/11780275.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 615, folder 7"])(1999)[He-Ho]. https://collections.library.yale.edu/catalog/11780275.