Cita APA (7a ed.)
National Research Council (U.S.), ebrary, Inc, & Koenig, J. A. (2011). Assessing 21st century skills: Summary of a workshop. National Academies Press.
Cita Chicago Style (17a ed.)
National Research Council (U.S.), Inc ebrary, y Judith Anderson Koenig. Assessing 21st Century Skills: Summary of a Workshop. Washington, D.C.: National Academies Press, 2011.
Cita MLA (9a ed.)
National Research Council (U.S.), et al. Assessing 21st Century Skills: Summary of a Workshop. National Academies Press, 2011.
Precaución: Estas citas no son 100% exactas.