Previous attempts to debunk the mythical retention chart and corrupted Dale's Cone

• Autores: Deepak Prem Subramony, Michael Molenda, Anthony Betrus, Will Thalheimer
• Localización: Educational technology: The magazine for managers of change in education, ISSN 0013-1962, Vol. 54, Nº. 6, 2014 (Ejemplar dedicado a: A special issue examining the mythical retention chart and corrupted Dale's Cone; plus regular features), págs. 17-21
• Idioma: inglés
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