Tham khảo Costanza II của Sicilia

  1. 1 2 Baker, Julian (20 tháng 10 năm 2020). Coinage and Money in Medieval Greece 1200-1430 (2 vols.) (bằng tiếng Anh). BRILL. tr. 767. ISBN 978-90-04-43464-6. Constance and Peter of Aragon (1282-1285)
  2. ↑ Runciman 1958, tr. 202.
  3. ↑ George 1875, tr. table XIII.
  4. ↑ «Diccionari Biogràfic de Dones: Bella, d'Amichi Lưu trữ 2016-08-07 tại Wayback Machine»
  5. ↑ Burgtorf 2007, tr. 74.
  6. ↑ Bartlett 2020, tr. 279.
  7. 1 2 3 Lodge 1924, tr. 278.
  8. ↑ Previte-Orton 1960, tr. 825.
  9. ↑ Cawsey 2002, tr. 2.
  10. 1 2 Hollander, Jean and Robert (2003). Translation of Purgatorio. New York: Anchor Books. tr. 111. ISBN 0-385-49700-8.

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