MLA

Kissinger, Henry, 1923-2023. Weichert, Jürgen. Box 324, folder 13. 1969-1971. https://collections.library.yale.edu/catalog/11774857.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 324, folder 13"])(1969-1971)[Weichert, Jürgen]. https://collections.library.yale.edu/catalog/11774857.