MLA

Kissinger, Henry, 1923-2023. Gustafson, Kristian-chapters on Chile with related messages from William D. Rogers [2 of 4]. Box 653, folder 7. 2004-2005, undated. https://collections.library.yale.edu/catalog/11780766.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 653, folder 7"])(2004-2005, undated)[Gustafson, Kristian-chapters on Chile with related messages from William D. Rogers [2 of 4]]. https://collections.library.yale.edu/catalog/11780766.