Cita APA (7th ed.)
Iglesia católica Papa, Fremantle, A., & Weigel, G. (1959). The papal encyclicals in their historical context. New American Library of World Literature.
Cita Chicago (17th ed.)
Iglesia católica Papa, Anne Fremantle, i Gustave Weigel. The Papal Encyclicals in Their Historical Context. New York: New American Library of World Literature, 1959.
Cita MLA (9th ed.)
Iglesia católica Papa, et al. The Papal Encyclicals in Their Historical Context. New American Library of World Literature, 1959.
Atenció: Aquestes cites poden no estar 100% correctes.