Guido De Ruggiero (Naples, 23 March 1888 – Rome, 29 December 1948) was a historian of philosophy, university professor, and Italian politician.[1][2]
- ^ Domenico, Roy Palmer (2002). The Regions of Italy: A Reference Guide to History and Culture. Greenwood Publishing Group. pp. 65–66. ISBN 978-0-313-30733-1.
- ^ Roberts, David (2006-04-27). The Totalitarian Experiment in Twentieth Century Europe: Understanding the Poverty of Great Politics. Routledge. pp. 192–194. ISBN 978-1-134-65117-7.