APA (7th ed.) Citation

Pius, P. C. C. P. (1937). On the recitation of the rosary to combat modern world evils; encyclical letter (Ingravescentibus malis) of His Holiness Pope Pius XI. Washington, D.C..

Chicago Style (17th ed.) Citation

Pius, Pope; Catholic Church. Pope. On the Recitation of the Rosary to Combat Modern World Evils; Encyclical Letter (Ingravescentibus Malis) of His Holiness Pope Pius XI. Washington, D.C., 1937.

MLA (8th ed.) Citation

Pius, Pope; Catholic Church. Pope. On the Recitation of the Rosary to Combat Modern World Evils; Encyclical Letter (Ingravescentibus Malis) of His Holiness Pope Pius XI. Washington, D.C., 1937.