MLA

D'Amico, Tano, 1942-. Assembly in Bologna, Dialogue [Bologna, Convegno Internazionale contro la repressione]. Box 1, folder 43. 1977 September 23-25. https://collections.library.yale.edu/catalog/2067167.

APA, 6th edition

D'Amico, Tano, 1942-. (["Box 1, folder 43"])(1977 September 23-25)[Assembly in Bologna, Dialogue [Bologna, Convegno Internazionale contro la repressione]]. https://collections.library.yale.edu/catalog/2067167.