Christie, C. A., Donald, S. I., & Mark, M. M. (2009). What counts as credible evidence in applied research and evaluation practice. Sage.
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Dyfyniad Arddull Chicago
Christie, Christina A., Stewart I. Donald, and Melvin M. Mark. What Counts as Credible Evidence in Applied Research and Evaluation Practice. Los Angeles: Sage, 2009.
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Dyfyniad MLA
Christie, Christina A., et al. What Counts as Credible Evidence in Applied Research and Evaluation Practice. Sage, 2009.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.