APA引文

ProQuest (Firm). (2011). Main aggregates. OECD.

芝加哥风格引文

ProQuest (Firm). Main Aggregates. [Paris, France]: OECD, 2011.

MLA引文

ProQuest (Firm). Main Aggregates. OECD, 2011.

警告：这些引文格式不一定是100％准确.