The pattern of dictatorship, by Max Lerner.
European dictatorships, by R. H. Luts.
Dictatorships in Spanish America, by J. F. Rippy. Bibliographical note (p. 80)
The Mussolini regime, by H. R. Spencer.
The origins of dictatorship in Germany, by H. C. Deutsch.
Communist and fascist dictatorship: a comparative study, by Hans Kohn.
The prospects for democracy, by D. W. Brogan.