APA-viite (7. p.)
Organisation for Economic Co-operation and Development & ProQuest (Firm). (2006). 21st century learning environments. OECD.
Chicago-viite (17. p.)
Organisation for Economic Co-operation and Development ja ProQuest (Firm). 21st Century Learning Environments. Paris: OECD, 2006.
MLA-viite (9. p.)
Organisation for Economic Co-operation and Development ja ProQuest (Firm). 21st Century Learning Environments. OECD, 2006.
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