MLA

Kissinger, Henry, 1923-2023. Hammond, Paul. Box 27, folder 13. 1956-1964. https://collections.library.yale.edu/catalog/11782816.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 27, folder 13"])(1956-1964)[Hammond, Paul]. https://collections.library.yale.edu/catalog/11782816.