MLA

Kissinger, Henry, 1923-2023. La. Box 590, folder 9. 1993. https://collections.library.yale.edu/catalog/11779955.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 590, folder 9"])(1993)[La]. https://collections.library.yale.edu/catalog/11779955.