MLA

Kissinger, Henry, 1923-2023. Aron, Raymond. Box 3, folder 4. 1955-1969. https://collections.library.yale.edu/catalog/11782324.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 3, folder 4"])(1955-1969)[Aron, Raymond]. https://collections.library.yale.edu/catalog/11782324.