Catholic Church. National Conference of Catholic Bishops, United States Catholic Conference. Division of Religious Education - CCD, Marthaler, B. L., & Brooks, A. V. (1974). A study aid for basic teachings for Catholic religious education. Publications Office, U.S. Catholic Conference.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Catholic Church. National Conference of Catholic Bishops, United States Catholic Conference. Division of Religious Education - CCD, Berard L. Marthaler, و Ann Virginia Brooks. A Study Aid for Basic Teachings for Catholic Religious Education. Washington, DC: Publications Office, U.S. Catholic Conference, 1974.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Catholic Church. National Conference of Catholic Bishops, et al. A Study Aid for Basic Teachings for Catholic Religious Education. Publications Office, U.S. Catholic Conference, 1974.