Philippine Office of the President National Statistical Coordination Board. (2002). 2002 Philippine central product classification. The National Statistical Information Center.
Lua i Stíl Chicago (17ú heag.)Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. Makati: The National Statistical Information Center, 2002.
Lua MLA (9ú heag.)Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. The National Statistical Information Center, 2002.
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