MLA

Kissinger, Henry, 1923-2023. Morris, Dick. Box 141, folder 4. 2007. https://collections.library.yale.edu/catalog/12479501.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 141, folder 4"])(2007)[Morris, Dick]. https://collections.library.yale.edu/catalog/12479501.