APA (7th ed.) Citation

Tillmann, H., & Innozenz, I. (1954). Papst Innocenz III. Bonner historische Forschungen.

Chicago Style (17th ed.) Citation

Tillmann, Helene, and III Innozenz. "Papst Innocenz III." Bonner Historische Forschungen 1954.

MLA (8th ed.) Citation

Tillmann, Helene, and III Innozenz. "Papst Innocenz III." Bonner Historische Forschungen, 1954.

Warning: These citations may not always be 100% accurate.