National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards & ebrary, Inc. (2012). A framework for K-12 science education: Practices, crosscutting concepts, and core ideas. National Academies Press.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards و Inc ebrary. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. Washington, D.C.: National Academies Press, 2012.
توثيق جمعية اللغة المعاصرة MLA (الإصدار التاسع)National Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards و Inc ebrary. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. National Academies Press, 2012.