MLA

Kissinger, Henry, 1923-2023. Sixth Conference of Pugwash Study Group, Marianske Lanze, Czechoslovakia, May 13-16, 1967. Box 108, folder 8. 1967 March-June. https://collections.library.yale.edu/catalog/11784243.

APA, 6th edition

Kissinger, Henry, 1923-2023. (["Box 108, folder 8"])(1967 March-June)[Sixth Conference of Pugwash Study Group, Marianske Lanze, Czechoslovakia, May 13-16, 1967]. https://collections.library.yale.edu/catalog/11784243.