MLA

Kissinger, Henry, 1923-2023. Lectures. Box 133, folder 10. 1968 February 26-28. https://collections.library.yale.edu/catalog/11784689.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 133, folder 10"])(1968 February 26-28)[Lectures]. https://collections.library.yale.edu/catalog/11784689.