Callahan, F. J. (1948). The centralization of government in pontifical institutes of women with simple vows: (from their beginnings till the legislation of Leo XIII). Pontificia Universitas Gregoriana.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Callahan, Francis J. The Centralization of Government in Pontifical Institutes of Women with Simple Vows: (from Their Beginnings Till the Legislation of Leo XIII). Romae: Pontificia Universitas Gregoriana, 1948.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Callahan, Francis J. The Centralization of Government in Pontifical Institutes of Women with Simple Vows: (from Their Beginnings Till the Legislation of Leo XIII). Pontificia Universitas Gregoriana, 1948.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.