MLA

Kissinger, Henry, 1923-2023. Da. Box 567, folder 11. 1988-1989. https://collections.library.yale.edu/catalog/11779659.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 567, folder 11"])(1988-1989)[Da]. https://collections.library.yale.edu/catalog/11779659.