Science Education Center, U. o. t. P. (1972). Elementary school mathematics 1: Teacher's Guide. Science Education Center, University of the Philippines.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Science Education Center, University of the Philippines. Elementary School Mathematics 1: Teacher's Guide. Quezon City: Science Education Center, University of the Philippines, 1972.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Science Education Center, University of the Philippines. Elementary School Mathematics 1: Teacher's Guide. Science Education Center, University of the Philippines, 1972.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.