Philippine Electronics and Telecommunications Federation. (1980). Philippine electronics and telecommunications industry yearbook, 1980-. Philippine Electronics and Telecommunications Federation.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippine Electronics and Telecommunications Federation. Philippine Electronics and Telecommunications Industry Yearbook, 1980-. Quezon City: Philippine Electronics and Telecommunications Federation, 1980.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippine Electronics and Telecommunications Federation. Philippine Electronics and Telecommunications Industry Yearbook, 1980-. Philippine Electronics and Telecommunications Federation, 1980.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.