MLA

Kissinger, Henry, 1923-2023. Sojak, Vladimir. Box 55, folder 22. 1964-1965. https://collections.library.yale.edu/catalog/11783450.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 55, folder 22"])(1964-1965)[Sojak, Vladimir]. https://collections.library.yale.edu/catalog/11783450.