APA (7th ed.) Citation

Fremantle, A. (1956). The papal encyclicals in their historical context. A Mentor Book.

Chicago Style (17th ed.) Citation

Fremantle, Anne. The Papal Encyclicals in Their Historical Context. New York: A Mentor Book, 1956.

MLA (9th ed.) Citation

Fremantle, Anne. The Papal Encyclicals in Their Historical Context. A Mentor Book, 1956.

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