(en) Grzegorz Pac, Women in the Piast Dynasty: A Comparative Study of Piast Wives and Daughters (c. 965–c.1144), BRILL, (ISBN978-90-04-50853-8, lire en ligne).
(en) Nora Berend, Przemysław Urbańczyk et Przemysław Wiszewski, Central Europe in the High Middle Ages: Bohemia, Hungary and Poland, c.900–c.1300, Cambridge University Press, (ISBN978-1-107-65139-5, lire en ligne).
(en) Matthew Koval, Childhood in Medieval Poland (1050-1300): Constructions and Realities in a European Context, BRILL, (ISBN978-90-04-46106-2, lire en ligne).
(en) Joachim Bumke, Courtly Culture: Literature and Society in the High Middle Ages, University of California Press, (ISBN978-0-520-06634-2, lire en ligne).
(en) Przemyslaw Wiszewski, Domus Bolezlai: Values and social identity in dynastic traditions of medieval Poland (c.966-1138), BRILL, (ISBN978-90-04-18136-6, lire en ligne).
(en) Grzegorz Pac, Women in the Piast Dynasty: A Comparative Study of Piast Wives and Daughters (c. 965–c.1144), BRILL, (ISBN978-90-04-50853-8, lire en ligne).
(en) Christian Raffensperger, Rulers and Rulership in the Arc of Medieval Europe, 1000-1200, Taylor & Francis, (ISBN978-1-000-92167-0, lire en ligne).
(en) Rosamond McKitterick, David Abulafia et C. T. Allmand, The New Cambridge Medieval History: Volume 4, C.1024-c.1198, Part 2, Cambridge University Press, (ISBN978-0-521-41411-1, lire en ligne).
(en) Przemyslaw Wiszewski, Domus Bolezlai: Values and social identity in dynastic traditions of medieval Poland (c.966-1138), BRILL, (ISBN978-90-04-18136-6, lire en ligne).