MLA

Kissinger, Henry, 1923-2023. Westmoreland, William. Box 63, folder 10. 1966-1968. https://collections.library.yale.edu/catalog/11783615.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 63, folder 10"])(1966-1968)[Westmoreland, William]. https://collections.library.yale.edu/catalog/11783615.