MLA

Kissinger, Henry, 1923-2023. Speaking engagements, 1963. Box 251, folder 8. 1963. https://collections.library.yale.edu/catalog/11786544.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 251, folder 8"])(1963)[Speaking engagements, 1963]. https://collections.library.yale.edu/catalog/11786544.