MLA

Kissinger, Henry, 1923-2023. Schedule. Box 365, folder 1. 1975 July-August. https://collections.library.yale.edu/catalog/11775453.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 365, folder 1"])(1975 July-August)[Schedule]. https://collections.library.yale.edu/catalog/11775453.