MLA

Kissinger, Henry, 1923-2023. Calendar. Box 81, folder 4. 1956. https://collections.library.yale.edu/catalog/11783869.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 81, folder 4"])(1956)[Calendar]. https://collections.library.yale.edu/catalog/11783869.