MLA

Kissinger, Henry, 1923-2023. Speech suggestions. Box 99, folder 11. 1961 October. https://collections.library.yale.edu/catalog/11784113.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 99, folder 11"])(1961 October)[Speech suggestions]. https://collections.library.yale.edu/catalog/11784113.