MLA

Harrington, Oliver W. (Oliver Wendell), 1912-1995. "It ain't much maybe for the major news networks but it is a part of territory liberated from the left-wing terrorists!. Box 33 (Oversize). undated. https://collections.library.yale.edu/catalog/33076502.

APA, 6th edition

Harrington, Oliver W. (Oliver Wendell), 1912-1995. (["Box 33 (Oversize)"])(undated)["It ain't much maybe for the major news networks but it is a part of territory liberated from the left-wing terrorists!]. https://collections.library.yale.edu/catalog/33076502.