The following sources were consulted in the preparation of the article “13 royals who had the weirdest habits.”
- Empress Elisabeth of Austria was a tragic beauty queen
- King Ludwig II of Bavaria
- Maria Eleonora – Queen of the Heart
- The French King Who Believed He Was Made of Glass
- A Different Twist on the “Dose Makes the Poison”
- An “enematic” saga
- Human skulls used for neurological remedies
- Diamond in a Shoe: The Jacob Diamond
- Why did ancient Egyptian King Pepi II Neferkare order slaves to be covered with honey?
- The Life of Domitian
- Mighty sovereigns of the Ottoman throne: Sultan Ibrahim
- Elizabeth I: fashion and beauty