MLA

Kissinger, Henry, 1923-2023. Halloween massacre-updated. Box 212, folder 4. 1975. https://collections.library.yale.edu/catalog/12480955.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 212, folder 4"])(1975)[Halloween massacre-updated]. https://collections.library.yale.edu/catalog/12480955.