Clavel, L. S., & Abadingo, L. E. (2008). Before the turning point: Personal stories of the University of the Philippines. Department of Social Sciences, College of Arts and Sciences, University of the Philippines Manila.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Clavel, Leothiny Solidum, و Lourdes Espinoza Abadingo. Before the Turning Point: Personal Stories of the University of the Philippines. Manila: Department of Social Sciences, College of Arts and Sciences, University of the Philippines Manila, 2008.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Clavel, Leothiny Solidum, و Lourdes Espinoza Abadingo. Before the Turning Point: Personal Stories of the University of the Philippines. Department of Social Sciences, College of Arts and Sciences, University of the Philippines Manila, 2008.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.