Olalia, A. A. (1944). A comparative study of the Christian constitution of states and the constitution of the Philippine commonwealth. The Catholic University of America Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Olalia, Alexander Ayson. A Comparative Study of the Christian Constitution of States and the Constitution of the Philippine Commonwealth. Washington, D.C: The Catholic University of America Press, 1944.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Olalia, Alexander Ayson. A Comparative Study of the Christian Constitution of States and the Constitution of the Philippine Commonwealth. The Catholic University of America Press, 1944.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.