Silva, Felipe Gustavo Soares da, and Marcos Roberto Nunes Costa. “Bula Unam Sanctam of Bonifácio VIII in the Context of Dispute by the Political Power at the End of the Middle Ages”. Argumentos - Revista De Filosofia, vol. 10, no. 20, Nov. 2018, doi:10.36517/arf.v10i20.39795.