MLA

Kissinger, Henry, 1923-2023. Harris, William R.. Box 28, folder 8. 1961-1968. https://collections.library.yale.edu/catalog/11782833.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 28, folder 8"])(1961-1968)[Harris, William R.]. https://collections.library.yale.edu/catalog/11782833.