APA (7th ed.) Citation

Otto, F. (1867). Ottonis Frisingensis Opera. Ottonis Frisingensis Opera.

Chicago Style (17th ed.) Citation

Otto, Freising. "Ottonis Frisingensis Opera." Ottonis Frisingensis Opera 1867.

MLA (9th ed.) Citation

Otto, Freising. "Ottonis Frisingensis Opera." Ottonis Frisingensis Opera, 1867.

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