MLA

Kissinger, Henry, 1923-2023. National Press Club. Box 205, folder 4. 1968 June. https://collections.library.yale.edu/catalog/11785943.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 205, folder 4"])(1968 June)[National Press Club]. https://collections.library.yale.edu/catalog/11785943.