Fascism, 1929–32: A Study in Conflict. Cambridge University Press. ISBN 978-0521023665. Pollard, Jonh F. (2014). The Papacy in the Age of Totalitarianism,...
Study in Conflict. Cambridge University Press, 1985, 2005. p. 92. ISBN 978-0521023665 Rodogno, Davide (2006). Fascism's European empire: Italian occupation...