MLA

Kissinger, Henry, 1923-2023. Cu. Box 308, folder 7. 1969-1975. https://collections.library.yale.edu/catalog/11774613.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 308, folder 7"])(1969-1975)[Cu]. https://collections.library.yale.edu/catalog/11774613.