ebrary, Inc, & Askew, S. (2000). Feedback for learning. RoutledgeFalmer.
Čikaški stil citiranja (17. izdanje)ebrary, Inc, i Sue Askew. Feedback for Learning. London: RoutledgeFalmer, 2000.
MLA način citiranja (9. izdanje)ebrary, Inc, i Sue Askew. Feedback for Learning. RoutledgeFalmer, 2000.
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