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.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Catholic Church. Pope (1939-1958 : Pius XII) و 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.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Catholic Church. Pope (1939-1958 : Pius XII) و 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.