National Science Development Board. (1974). National Institute of Science and Technology: Plans and programs for foreign technical assistance [microform]. Photoduplication Service.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Science Development Board. National Institute of Science and Technology: Plans and Programs for Foreign Technical Assistance [microform]. Quezon City: Photoduplication Service, 1974.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Science Development Board. National Institute of Science and Technology: Plans and Programs for Foreign Technical Assistance [microform]. Photoduplication Service, 1974.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.