ProQuest (Firm). (2011). PISA 2009 results: Students on line. OECD.
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芝加哥风格引文
ProQuest (Firm). PISA 2009 Results: Students on Line. [Paris]: OECD, 2011.
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MLA引文
ProQuest (Firm). PISA 2009 Results: Students on Line. OECD, 2011.
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警告：这些引文格式不一定是100％准确.