MLA

Kissinger, Henry, 1923-2023. A-M. Box 553, folder 6. 1983-1985. https://collections.library.yale.edu/catalog/11779449.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 553, folder 6"])(1983-1985)[A-M]. https://collections.library.yale.edu/catalog/11779449.