Norman Kogan (June 1953). "The Italian Action Party and the Institutional Question". The Western Political Quarterly. 6 (2): 279. doi:10.2307/442162. JSTOR442162.
Stanislao G. Pugliese (Winter 2007). "In Defense of Liberal Socialism: Carlo Rosselli's Legacy". Italian Americana. 25 (1): 30. JSTOR41330566.
Norman Kogan (June 1953). "The Italian Action Party and the Institutional Question". The Western Political Quarterly. 6 (2): 279. doi:10.2307/442162. JSTOR442162.