MLA

Kissinger, Henry, 1923-2023. von Baudissin, Georg. Box 61, folder 13. 1960-1968. https://collections.library.yale.edu/catalog/11783568.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 61, folder 13"])(1960-1968)[von Baudissin, Georg]. https://collections.library.yale.edu/catalog/11783568.