MLA

Kissinger, Henry, 1923-2023. Mc. Box 21, folder 4. 2004. https://collections.library.yale.edu/catalog/12481150.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 21, folder 4"])(2004)[Mc]. https://collections.library.yale.edu/catalog/12481150.