Programme for International Student Assessment, Organisation for Economic Co-operation and Development, & ProQuest (Firm). (2012). Grade expectations: How marks and education policies shape students ambitions. OECD.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Programme for International Student Assessment, Organisation for Economic Co-operation and Development, و ProQuest (Firm). Grade Expectations: How Marks and Education Policies Shape Students Ambitions. [Paris]: OECD, 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)Programme for International Student Assessment, et al. Grade Expectations: How Marks and Education Policies Shape Students Ambitions. OECD, 2012.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.