MLA

Kissinger, Henry, 1923-2023. Gourevitch, Peter. Box 25, folder 16. 1965-1968. https://collections.library.yale.edu/catalog/11782775.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 25, folder 16"])(1965-1968)[Gourevitch, Peter]. https://collections.library.yale.edu/catalog/11782775.