APA (7th ed.) Citation

Powell, J. M. (1963). Frederick II and the Church: A Revisionist View. The catholic historical review, 48(4), 487-497.

Chicago Style (17th ed.) Citation

Powell, James M. "Frederick II and the Church: A Revisionist View." The Catholic Historical Review 48, no. 4 (1963): 487-497.

MLA (8th ed.) Citation

Powell, James M. "Frederick II and the Church: A Revisionist View." The Catholic Historical Review, vol. 48, no. 4, 1963, pp. 487-497.

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