MLA

Kissinger, Henry, 1923-2023. Ho. Box 514, folder 7. 1990-1991. https://collections.library.yale.edu/catalog/11778812.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 514, folder 7"])(1990-1991)[Ho]. https://collections.library.yale.edu/catalog/11778812.