↑ Guy, John, My Heart is my Own, London, Fourth Estate, 2004, ISBN 0-00-71930-8:47
↑ Farquhar, Michael (2001). A Treasure of Royal Scandals: The Shocking True Stories History's Wickedest, Weirdest, Most Wanton Kings, Queens, Tsars, Popes, and Emperors, p.81. Penguin Books, New York. ISBN 0-7394-2025-9.
