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.
Chicago Style (17. basım) AtıfCallahan, 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.
MLA (8th ed.) AtıfCallahan, 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.
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