توثيق جمعية علم النفس الأمريكية APA (الطبعة السابعة)

Philippine Office of the President National Statistical Coordination Board. (2002). 2002 Philippine central product classification. The National Statistical Information Center.

توثيق أسلوب شيكاغو (الطبعة السابعة عشر)

Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. Makati: The National Statistical Information Center, 2002.

توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)

Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. The National Statistical Information Center, 2002.