Philippines National Statistics Office. (2003). 2003 Commodity flow in the Philippines. National Statistics Office.
芝加哥风格引文Philippines National Statistics Office. 2003 Commodity Flow in the Philippines. Manila: National Statistics Office, 2003.
MLA引文Philippines National Statistics Office. 2003 Commodity Flow in the Philippines. National Statistics Office, 2003.
警告：这些引文格式不一定是100％准确.