MLA

Kissinger, Henry, 1923-2023. Newsweek 50th anniversary dinner, Feb 7, 1983. Box 697, folder 10. 1983. https://collections.library.yale.edu/catalog/11781338.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 697, folder 10"])(1983)[Newsweek 50th anniversary dinner, Feb 7, 1983]. https://collections.library.yale.edu/catalog/11781338.