APA (7th ed.) Citation

Bishop, J. C. (1984). Pope Nicholas I and the first age of papal independence. Univ. Microfilms Internat.

Chicago Style (17th ed.) Citation

Bishop, Jane C. Pope Nicholas I and the First Age of Papal Independence. Ann Arbor, Mich: Univ. Microfilms Internat, 1984.

MLA (9th ed.) Citation

Bishop, Jane C. Pope Nicholas I and the First Age of Papal Independence. Univ. Microfilms Internat, 1984.