Organisation for Economic Co-operation and Development, Centre for Educational Research and Innovation, & ProQuest (Firm). (2007). Giving knowledge for free: The emergence of open educational resources. Organisation for Economic Co-operation and Development.
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Chicago-čujuhus (17. p.)
Organisation for Economic Co-operation and Development, Centre for Educational Research and Innovation, juo ProQuest (Firm). Giving Knowledge for Free: The Emergence of Open Educational Resources. [Paris, France?]: Organisation for Economic Co-operation and Development, 2007.
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MLA-čujuhus (9. p.)
Organisation for Economic Co-operation and Development, et al. Giving Knowledge for Free: The Emergence of Open Educational Resources. Organisation for Economic Co-operation and Development, 2007.
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