MLA

Kissinger, Henry, 1923-2023. Cameron, Robert. Box 12, folder 3. 1958-1968. https://collections.library.yale.edu/catalog/11782486.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 12, folder 3"])(1958-1968)[Cameron, Robert]. https://collections.library.yale.edu/catalog/11782486.