MLA

Kissinger, Henry, 1923-2023. Waigel, Theodore. Box 565, folder 8. 1987-1988. https://collections.library.yale.edu/catalog/11779632.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 565, folder 8"])(1987-1988)[Waigel, Theodore]. https://collections.library.yale.edu/catalog/11779632.