Schieffer, T. (1986). Regesta pontificum Romanorum / Germania pontificia: Congessit Theodorus Schieffer. Vandenhoeck & Ruprecht.
Cita Chicago (17th ed.)Schieffer, Theodor. Regesta Pontificum Romanorum / Germania Pontificia: Congessit Theodorus Schieffer. Göttingen: Vandenhoeck & Ruprecht, 1986.
Cita MLA (8th ed.)Schieffer, Theodor. Regesta Pontificum Romanorum / Germania Pontificia: Congessit Theodorus Schieffer. Vandenhoeck & Ruprecht, 1986.
Atenció: Aquestes cites poden no estar 100% correctes.