ebrary, Inc, Hurst, K., & Downey-Ennis. (2007). Quality then, quality now: A 20 year retrospective. Emerald Group Publishing.
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Dyfyniad Arddull Chicago
ebrary, Inc, Keith Hurst, and Downey-Ennis. Quality Then, Quality Now: A 20 Year Retrospective. Bradford, England: Emerald Group Publishing, 2007.
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Dyfyniad MLA
ebrary, Inc, et al. Quality Then, Quality Now: A 20 Year Retrospective. Emerald Group Publishing, 2007.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.