MLA

Kissinger, Henry, 1923-2023. Seminar notes. Box 130, folder 2. 1968 November 20. https://collections.library.yale.edu/catalog/11784613.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 130, folder 2"])(1968 November 20)[Seminar notes]. https://collections.library.yale.edu/catalog/11784613.