MLA

Kissinger, Henry, 1923-2023. Rockefeller, David and Peggy. Box 508, folder 13. 1989. https://collections.library.yale.edu/catalog/11778717.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 508, folder 13"])(1989)[Rockefeller, David and Peggy]. https://collections.library.yale.edu/catalog/11778717.