MLA

Kissinger, Henry, 1923-2023. Zanzibar. Box 176, folder 17. 1964 January-May. https://collections.library.yale.edu/catalog/11785387.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 176, folder 17"])(1964 January-May)[Zanzibar]. https://collections.library.yale.edu/catalog/11785387.