MLA

Kissinger, Henry, 1923-2023. Miscellaneous memoranda regarding Barry Goldwater and campaign [2 of 2]. Box 187, folder 18. 1963 January-1964 May. https://collections.library.yale.edu/catalog/11785600.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 187, folder 18"])(1963 January-1964 May)[Miscellaneous memoranda regarding Barry Goldwater and campaign [2 of 2]]. https://collections.library.yale.edu/catalog/11785600.