Philippine Office of the President National Statistical Coordination Board. (2002). 2002 Philippine central product classification. The National Statistical Information Center.
芝加哥风格引文Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. Makati: The National Statistical Information Center, 2002.
MLA引文Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. The National Statistical Information Center, 2002.
警告：这些引文格式不一定是100％准确.