MLA

Kissinger, Henry, 1923-2023. Ra. Box 551, folder 5. 2000. https://collections.library.yale.edu/catalog/11779414.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 551, folder 5"])(2000)[Ra]. https://collections.library.yale.edu/catalog/11779414.