Kazin, M. (1989). Barons of Labor: The San Francisco Building Trades and Union Power in the Progressive Era. Chicago: University of Illinois Press.
Lua i Stíl Chicago (17ú heag.)Kazin, Michael. Barons of Labor: The San Francisco Building Trades and Union Power in the Progressive Era. Chicago: University of Illinois Press, 1989.
Lua MLA (8ú heag.)Kazin, Michael. Barons of Labor: The San Francisco Building Trades and Union Power in the Progressive Era. Chicago: University of Illinois Press, 1989.
Rabhadh: D'fhéadfadh nach mbeadh na deismireachtaí seo 100% cruinn i gcónaí.