ebrary, Inc, Phye, G. D., Robinson, D. H., & Levin, J. R. (2005). Empirical methods for evaluating educational interventions. Elsevier Academic Press.
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Chicago-čujuhus (17. p.)
ebrary, Inc, Gary D. Phye, Daniel H. Robinson, juo Joel R. Levin. Empirical Methods for Evaluating Educational Interventions. San Diego: Elsevier Academic Press, 2005.
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MLA-čujuhus (9. p.)
ebrary, Inc, et al. Empirical Methods for Evaluating Educational Interventions. Elsevier Academic Press, 2005.
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