(1983). U. P. thesis and dissertation abstracts 1980-82. The University of the Philippines - NSTA Integrated Research Program "A" University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)U. P. Thesis and Dissertation Abstracts 1980-82. Diliman, Quezon City: The University of the Philippines - NSTA Integrated Research Program "A" University of the Philippines, 1983.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)U. P. Thesis and Dissertation Abstracts 1980-82. The University of the Philippines - NSTA Integrated Research Program "A" University of the Philippines, 1983.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.