Espinoza, L. M. (1978). The Commission on Elections and Philippine political modernization [microform]. Photoduplication Service, University of the Philippines Library.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Espinoza, Lourdes Martinez. The Commission on Elections and Philippine Political Modernization [microform]. Quezon City: Photoduplication Service, University of the Philippines Library, 1978.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Espinoza, Lourdes Martinez. The Commission on Elections and Philippine Political Modernization [microform]. Photoduplication Service, University of the Philippines Library, 1978.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.