"The Medieval Theories of the Just Prince, Romanists, Canonists and Theologians in the Twelfth and Thirteenth Centuries", John W. Baldwin, Philadelphia 1959 : [recenzja]

Kwartalnik Historii Nauki i Techniki, Tom 5, Numer 3-4 (1960) s. 447-451
Paweł Czartoryski , John W. Baldwin (aut. dzieła rec.)