1. Antonioli, M., & Torre Santos, J. (2006). Riformisti e rivoluzionari. La Camera del lavoro di Milano dalle origini alla Grande guerra. Franco Angeli.
2. Archer, R. (2001). Does repression help to create labor parties? The effect of police and military intervention on Unions in the United States and Australia. Studies in American Political Development, 15, 189–219.
3. Asimov, I. (1957). Male strikebreaker. In The original science fiction stories, January.
4. Aurand, H. W. (2002). The Lattimer Massacre: Who owns history? – An introduction. Pennsylvania History: A Journal of Mid-Atlantic Studies. The Lattimer Massacre of 1897, 69(1), 5–10.
5. Avrich, P. (1984). The Haymarket tragedy. Princeton University Press.