Pontifical Institute of Mediaeval Studies & Ryan, C. (1989). The religious roles of the papacy: Ideals and realities ; 1150-1300. Papers in mediaeval studies.
Cita Chicago Style (17a ed.)Pontifical Institute of Mediaeval Studies y Christopher Ryan. "The Religious Roles of the Papacy: Ideals and Realities ; 1150-1300." Papers in Mediaeval Studies 1989.
Cita MLA (8a ed.)Pontifical Institute of Mediaeval Studies y Christopher Ryan. "The Religious Roles of the Papacy: Ideals and Realities ; 1150-1300." Papers in Mediaeval Studies, 1989.
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