Philippines & University of the Philippines. Office of the National Administrative Register. (2001). Intellectual Property Code of the Philippines: Republic Act No. 8293 and its implementing rules & regulations. Office of the National Administrative Register, University of the Philippines Law Center.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Philippines و University of the Philippines. Office of the National Administrative Register. Intellectual Property Code of the Philippines: Republic Act No. 8293 and Its Implementing Rules & Regulations. Quezon City: Office of the National Administrative Register, University of the Philippines Law Center, 2001.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Philippines و University of the Philippines. Office of the National Administrative Register. Intellectual Property Code of the Philippines: Republic Act No. 8293 and Its Implementing Rules & Regulations. Office of the National Administrative Register, University of the Philippines Law Center, 2001.