Zabala, C. R. (1988). Academic performance of barangay high school graduates of the two-year trade technical education: An appraisal.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Zabala, Carmelita Rivera. Academic Performance of Barangay High School Graduates of the Two-year Trade Technical Education: An Appraisal. 1988.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Zabala, Carmelita Rivera. Academic Performance of Barangay High School Graduates of the Two-year Trade Technical Education: An Appraisal. 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.