Philippines. National Statistics Office. (2013). 2012 foreign trade statistics of the Philippines. NSO.
Cita Chicago (17th ed.)Philippines. National Statistics Office. 2012 Foreign Trade Statistics of the Philippines. Manila: NSO, 2013.
Cita MLA (9th ed.)Philippines. National Statistics Office. 2012 Foreign Trade Statistics of the Philippines. NSO, 2013.
Atenció: Aquestes cites poden no estar 100% correctes.