MLA

Kissinger, Henry, 1923-2023. Ab. Box 29, folder 11. 2006. https://collections.library.yale.edu/catalog/12481384.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 29, folder 11"])(2006)[Ab]. https://collections.library.yale.edu/catalog/12481384.