Organisation for Economic Co-operation and Development & ProQuest (Firm). (2008). Education at a glance. Organisation for Economic Co-operation and Development.
Чикаго-гийн эшлэл (17 дахь хэвлэлт)Organisation for Economic Co-operation and Development ба ProQuest (Firm). Education at a Glance. Paris: Organisation for Economic Co-operation and Development, 2008.
MLA -ийн эшлэл (9 дэх хэвлэлт)Organisation for Economic Co-operation and Development ба ProQuest (Firm). Education at a Glance. Organisation for Economic Co-operation and Development, 2008.
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