MLA

Kissinger, Henry, 1923-2023. Karas, Thomas. Box 135, folder 5. 1966. https://collections.library.yale.edu/catalog/11784718.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 135, folder 5"])(1966)[Karas, Thomas]. https://collections.library.yale.edu/catalog/11784718.