MLA

Kissinger, Henry, 1923-2023. International Conference on Defense and Strategy, Harvard University, May 31-Jun 9, 1963-proceedings in German. Box 126, folder 6. 1963. https://collections.library.yale.edu/catalog/11784549.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 126, folder 6"])(1963)[International Conference on Defense and Strategy, Harvard University, May 31-Jun 9, 1963-proceedings in German]. https://collections.library.yale.edu/catalog/11784549.