Philippine Office of the President National Statistical Coordination Board. (2002). 2002 Philippine central product classification. The National Statistical Information Center.
Цитирование в стиле Чикаго (17-е изд.)Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. Makati: The National Statistical Information Center, 2002.
Цитирование MLA (9-е изд.)Philippine Office of the President National Statistical Coordination Board. 2002 Philippine Central Product Classification. The National Statistical Information Center, 2002.
Предупреждение: эти цитированмия не могут быть всегда правильны на 100%.