Catholic Church. Pope (1939-1958 : Pius XII) & Pius XII, P. (1957). The Lourdes pilgrimage: Encyclical of His Holiness Pope Pius XII issued on the centenary of the apparitions of the Blessed Virgin at Lourdes, July 2, 1957. National Catholic Welfare Conference.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Catholic Church. Pope (1939-1958 : Pius XII) و Pope Pius XII. The Lourdes Pilgrimage: Encyclical of His Holiness Pope Pius XII Issued on the Centenary of the Apparitions of the Blessed Virgin at Lourdes, July 2, 1957. Washington: National Catholic Welfare Conference, 1957.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Catholic Church. Pope (1939-1958 : Pius XII) و Pope Pius XII. The Lourdes Pilgrimage: Encyclical of His Holiness Pope Pius XII Issued on the Centenary of the Apparitions of the Blessed Virgin at Lourdes, July 2, 1957. National Catholic Welfare Conference, 1957.