MLA

Kissinger, Henry, 1923-2023. Ko. Box 506, folder 14. 1988-1989. https://collections.library.yale.edu/catalog/11778689.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 506, folder 14"])(1988-1989)[Ko]. https://collections.library.yale.edu/catalog/11778689.