Leo XIII, P. (1900). Encyclical letter of our most holy lord, Leo XIII., by divine providence Pope: To all the patriarchs, primates, archbishops and bishops of the Catholic world holding grace and communion with the apostolic see. Concerning Jesus Christ our redeemer. Leo XIII and Apostolic Benediciton. S.I..
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Leo XIII, Pope. Encyclical Letter of Our Most Holy Lord, Leo XIII., by Divine Providence Pope: To All the Patriarchs, Primates, Archbishops and Bishops of the Catholic World Holding Grace and Communion with the Apostolic See. Concerning Jesus Christ Our Redeemer. Leo XIII and Apostolic Benediciton. S.I., 1900.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Leo XIII, Pope. Encyclical Letter of Our Most Holy Lord, Leo XIII., by Divine Providence Pope: To All the Patriarchs, Primates, Archbishops and Bishops of the Catholic World Holding Grace and Communion with the Apostolic See. Concerning Jesus Christ Our Redeemer. Leo XIII and Apostolic Benediciton. S.I., 1900.