APA (7th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII) & Pius XII, P. (1957). Encyclical letter (Le Pèlerinage de Lourdes) of his holiness Pope Pius XII ...: On the occasion of the first centenary of the appearance of the immaculate Virgin Mary at Lourdes. Catholic Truth Society.

Chicago Style (17th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII) and Pope Pius XII. Encyclical Letter (Le Pèlerinage De Lourdes) of His Holiness Pope Pius XII ...: On the Occasion of the First Centenary of the Appearance of the Immaculate Virgin Mary at Lourdes. London: Catholic Truth Society, 1957.

MLA (8th ed.) Citation

Catholic Church. Pope (1939-1958 : Pius XII) and Pope Pius XII. Encyclical Letter (Le Pèlerinage De Lourdes) of His Holiness Pope Pius XII ...: On the Occasion of the First Centenary of the Appearance of the Immaculate Virgin Mary at Lourdes. Catholic Truth Society, 1957.