MLA

Kissinger, Henry, 1923-2023. Foreign Service Institute. Box 21, folder 13. 1958-1962. https://collections.library.yale.edu/catalog/11782698.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 21, folder 13"])(1958-1962)[Foreign Service Institute]. https://collections.library.yale.edu/catalog/11782698.