Siano, Catanzaro
| RICCARDO È IL RE DEL MONDO
- Gino Moliterno, ur. (2003). Encyclopedia of Contemporary Italian Culture (Routledge; Routledge World Reference izd.). ISBN 0415285569.
- Marco Armiero, Marcus Hall, ur. (2010). Nature and History in Modern Italy (Ecology & History) (1st izd.). Ohio University Press. ISBN 0821419161.
- Francesco Guicciardini (1984). The History of Italy. Princeton University Press. ISBN 0691008000.
- Roy P. Domenico (2001). The Regions of Italy: A Reference Guide to History and Culture. Greenwood. ISBN B001BWSQ66.
- Catherine B. Avery, ur. (1972). The New Century Italian Renaissance Encyclopedia (Simon & Schuste izd.). ISBN 0136120512.
- Frank J. Coppa (1985). Dictionary of Modern Italian History. Greenwood. ISBN 031322983X.
