MLA

Kissinger, Henry, 1923-2023. Russia. Box 144, folder 7. 2007. https://collections.library.yale.edu/catalog/12479771.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 144, folder 7"])(2007)[Russia]. https://collections.library.yale.edu/catalog/12479771.