MLA

Kissinger, Henry, 1923-2023. Utah State University, Aug 21-22, 1961. Box 248, folder 9. 1961 February-September. https://collections.library.yale.edu/catalog/11786480.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 248, folder 9"])(1961 February-September)[Utah State University, Aug 21-22, 1961]. https://collections.library.yale.edu/catalog/11786480.