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- Farquhar, Michael. A Treasury of Royal Scandals. Penguin (Non-Classics) (May 1, 2001).
- Heyman, J.D., editor. People: The Royals: Their Lives, Loves, and Secrets. People, (April 10, 2007).
- Hindley, Geoffrey. The Royal Families of Europe. Carroll & Graf Publishers, (March 30, 2001).
- Shaw, Karl. Royal Babylon: The Alarming History of European Royalty. Broadway, (May 29, 2001).