Butler, T. F. (1890). The principle of authority: Churches and pastors, the Church, its authority. Catholic Truth Society of America.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Butler, Thomas F. The Principle of Authority: Churches and Pastors, the Church, Its Authority. St. Paul, Minn.: Catholic Truth Society of America, 1890.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Butler, Thomas F. The Principle of Authority: Churches and Pastors, the Church, Its Authority. Catholic Truth Society of America, 1890.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.