MLA

Harrington, Oliver W. (Oliver Wendell), 1912-1995. "That guy who says he can identify the cops who shot them unarmed teen-agers last week got busted by the Feds in one'a their famous sting operations!". Box 15 (Oversize). undated. https://collections.library.yale.edu/catalog/33075752.

APA, 6th edition

Harrington, Oliver W. (Oliver Wendell), 1912-1995. (["Box 15 (Oversize)"])(undated)["That guy who says he can identify the cops who shot them unarmed teen-agers last week got busted by the Feds in one'a their famous sting operations!"]. https://collections.library.yale.edu/catalog/33075752.