National Research Council (U.S.), ebrary, Inc, & Koenig, J. A. (2011). Assessing 21st century skills: Summary of a workshop. National Academies Press.
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Chicago Style (17th ed.) Zitazioa
National Research Council (U.S.), Inc ebrary, eta Judith Anderson Koenig. Assessing 21st Century Skills: Summary of a Workshop. Washington, D.C.: National Academies Press, 2011.
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MLA (9th ed.) Zitazioa
National Research Council (U.S.), et al. Assessing 21st Century Skills: Summary of a Workshop. National Academies Press, 2011.
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