MLA

Kissinger, Henry, 1923-2023. Bilderberg Conference, Saint Simons Island, Georgia, Feb 15-17, 1957 [1 of 2]. Box 80, folder 9. Circa 1957 February. https://collections.library.yale.edu/catalog/11783863.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 80, folder 9"])(Circa 1957 February)[Bilderberg Conference, Saint Simons Island, Georgia, Feb 15-17, 1957 [1 of 2]]. https://collections.library.yale.edu/catalog/11783863.