Gumbleton, T. J. (1964). Separation and divorce: A comparative study of the canon law of the Catholic Church and the civil law of the State of Michigan, looking toward a solution to the problem of family break-up. Pontificia Universitas Lateranensi, Institutum Utriusque Iuris.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Gumbleton, Thomas J. Separation and Divorce: A Comparative Study of the Canon Law of the Catholic Church and the Civil Law of the State of Michigan, Looking Toward a Solution to the Problem of Family Break-up. Rome: Pontificia Universitas Lateranensi, Institutum Utriusque Iuris, 1964.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Gumbleton, Thomas J. Separation and Divorce: A Comparative Study of the Canon Law of the Catholic Church and the Civil Law of the State of Michigan, Looking Toward a Solution to the Problem of Family Break-up. Pontificia Universitas Lateranensi, Institutum Utriusque Iuris, 1964.