MLA

Kissinger, Henry, 1923-2023. Q. Box 544, folder 12. 1999. https://collections.library.yale.edu/catalog/11779321.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 544, folder 12"])(1999)[Q]. https://collections.library.yale.edu/catalog/11779321.