MLA

Kissinger, Henry, 1923-2023. ABC. Box 642, folder 1. 1982-1988. https://collections.library.yale.edu/catalog/11780634.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 642, folder 1"])(1982-1988)[ABC]. https://collections.library.yale.edu/catalog/11780634.