MLA

Kissinger, Henry, 1923-2023. Ar. Box 304, folder 3. 1969-1972. https://collections.library.yale.edu/catalog/11774554.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 304, folder 3"])(1969-1972)[Ar]. https://collections.library.yale.edu/catalog/11774554.