MLA

Kissinger, Henry, 1923-2023. T. Box 594, folder 10. 1994. https://collections.library.yale.edu/catalog/11780011.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 594, folder 10"])(1994)[T]. https://collections.library.yale.edu/catalog/11780011.