MLA

Kissinger, Henry, 1923-2023. Ci-Co. Box 589, folder 5. 1993. https://collections.library.yale.edu/catalog/11779937.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 589, folder 5"])(1993)[Ci-Co]. https://collections.library.yale.edu/catalog/11779937.