MLA

Kissinger, Henry, 1923-2023. Ba. Box 576, folder 4. 1990. https://collections.library.yale.edu/catalog/11779751.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 576, folder 4"])(1990)[Ba]. https://collections.library.yale.edu/catalog/11779751.