APA
Pius XII P., . (1950). Encyclical Letters of His Holiness Pope Pius XII: Humani Generis: Concerning Some False Opinions which Threaten to Undermine the Foundations of Catholic Doctrine. St. Paul: St. Paul Editions.
Chicago
Pius XII Pope, . 1950. Encyclical Letters of His Holiness Pope Pius XII: Humani Generis: Concerning Some False Opinions which Threaten to Undermine the Foundations of Catholic Doctrine. St. Paul: St. Paul Editions.
Harvard
Pius XII P., . (1950). Encyclical Letters of His Holiness Pope Pius XII: Humani Generis: Concerning Some False Opinions which Threaten to Undermine the Foundations of Catholic Doctrine. St. Paul: St. Paul Editions.
MLA
Pius XII Pope, . Encyclical Letters of His Holiness Pope Pius XII: Humani Generis: Concerning Some False Opinions which Threaten to Undermine the Foundations of Catholic Doctrine. St. Paul: St. Paul Editions. 1950.
