MLA

Kissinger, Henry, 1923-2023. Century Association Club. Box 12, folder 15. 1960-1969. https://collections.library.yale.edu/catalog/11782498.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 12, folder 15"])(1960-1969)[Century Association Club]. https://collections.library.yale.edu/catalog/11782498.