MLA

Kissinger, Henry, 1923-2023. General. Box 188, folder 8. 1964 May. https://collections.library.yale.edu/catalog/11785610.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 188, folder 8"])(1964 May)[General]. https://collections.library.yale.edu/catalog/11785610.