MLA

Baldwin, James, 1924-1987. Lerner, Eugene. Box 2 | Folder 9. 1965-1968.. https://collections.library.yale.edu/catalog/16599701.

APA, 6th edition

Baldwin, James, 1924-1987. (["Box 2 | Folder 9"])(1965-1968.)[Lerner, Eugene]. https://collections.library.yale.edu/catalog/16599701.