MLA

Kissinger, Henry, 1923-2023. Manuscript draft. Box 255, folder 5. Circa 1968 August. https://collections.library.yale.edu/catalog/11786675.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 255, folder 5"])(Circa 1968 August)[Manuscript draft]. https://collections.library.yale.edu/catalog/11786675.