APA (7th ed.) Citation

Becker, A. (1988). Papst Urban II: (1088 - 1099). Hiersemann.

Chicago Style (17th ed.) Citation

Becker, Alfons. Papst Urban II: (1088 - 1099). Stuttgart: Hiersemann, 1988.

MLA (9th ed.) Citation

Becker, Alfons. Papst Urban II: (1088 - 1099). Hiersemann, 1988.

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