Cita APA (7th 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 (17th ed.)
National Research Council (U.S.), Inc ebrary, i Judith Anderson Koenig. Assessing 21st Century Skills: Summary of a Workshop. Washington, D.C.: National Academies Press, 2011.
Cita MLA (9th ed.)
National Research Council (U.S.), et al. Assessing 21st Century Skills: Summary of a Workshop. National Academies Press, 2011.
Atenció: Aquestes cites poden no estar 100% correctes.