MLA

Kissinger, Henry, 1923-2023. Strategic Air Command, Offutt Air Force Base, Omaha, Nebraska, Feb 6, 1956. Box 240, folder 10. 1956 January-February. https://collections.library.yale.edu/catalog/11786344.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 240, folder 10"])(1956 January-February)[Strategic Air Command, Offutt Air Force Base, Omaha, Nebraska, Feb 6, 1956]. https://collections.library.yale.edu/catalog/11786344.