MLA

Kissinger, Henry, 1923-2023. Schedule. Box 366, folder 1. 1976 July-September. https://collections.library.yale.edu/catalog/11775461.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 366, folder 1"])(1976 July-September)[Schedule]. https://collections.library.yale.edu/catalog/11775461.