@Book{BVMC:619821, author = {Barclay, William}, title = {Guilielmi Barclaij De potestate Papae, an et quatenus in reges et principes seculares ius et imperium habeat}, url = {https://www.cervantesvirtual.com/obra/guilielmi-barclaij-de-potestate-papae-an-et-quatenus-in-reges-et-principes-seculares-ius-et-imperium-habeat} }