O'Brien, J. A. (1957). Is one religion as good as another?: A plain answer to a common question. Our Sunday Visitor Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)O'Brien, John A. Is One Religion as Good as Another?: A Plain Answer to a Common Question. Huntington, Indiana: Our Sunday Visitor Press, 1957.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)O'Brien, John A. Is One Religion as Good as Another?: A Plain Answer to a Common Question. Our Sunday Visitor Press, 1957.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.