Smith, E. A. (1972). Religious liberty in the United States: The development of church-state thought since the Revolutionary era. Fortress Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Smith, Elwyn A. Religious Liberty in the United States: The Development of Church-state Thought Since the Revolutionary Era. Philadelphia: Fortress Press, 1972.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Smith, Elwyn A. Religious Liberty in the United States: The Development of Church-state Thought Since the Revolutionary Era. Fortress Press, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.