توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Catholic Church. Pope (1922-1939 : Pius XI). (1935). Forty years after: Reconstructing the social order : Encyclical letter of His Holiness Pope Pius XI. National Catholic Welfare Conference.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Catholic Church. Pope (1922-1939 : Pius XI). Forty Years After: Reconstructing the Social Order : Encyclical Letter of His Holiness Pope Pius XI. Washington, D.C.: National Catholic Welfare Conference, 1935.

توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)

Catholic Church. Pope (1922-1939 : Pius XI). Forty Years After: Reconstructing the Social Order : Encyclical Letter of His Holiness Pope Pius XI. National Catholic Welfare Conference, 1935.