Philippines. Department of Science and Technology. Science Education Institute. (1988). Low-cost equipment for college physics. Science Education Institute.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines. Department of Science and Technology. Science Education Institute. Low-cost Equipment for College Physics. Taguig, Metro Manila: Science Education Institute, 1988.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines. Department of Science and Technology. Science Education Institute. Low-cost Equipment for College Physics. Science Education Institute, 1988.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.