Centre for Educational Research and Innovation. (1991). Environment, schools and active learning. Organisation for Economic Co-Operation and Development.
Παραπομπή σε μορφή Chicago (17η εκδ.)Centre for Educational Research and Innovation. Environment, Schools and Active Learning. Paris: Organisation for Economic Co-Operation and Development, 1991.
Παραπομπή σε μορφή MLA (9th εκδ.)Centre for Educational Research and Innovation. Environment, Schools and Active Learning. Organisation for Economic Co-Operation and Development, 1991.
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