↑Willis, Daniel (1999). The Descendants of Louis XIII. Baltimore, MD: Clearfield Co. pp. 94, 762. ISBN0-8063-4942-5. The daughters of Prince and Princess Michael [of Greece and Denmark] are titled Princess of Greece without the style of Royal Highness
↑Huberty, Michel; Alain Giraud, F.; B. Magdelaine (1994). L'Allemagne Dynastique Tome VII Oldenbourg (ภาษาฝรั่งเศส). France: Giraud. pp. 329, 357. ISBN2-901138-07-1.