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.
Չիկագոյի ոճի (17րդ խմբ.) մեջբերումNational Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards and Inc ebrary. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. Washington, D.C.: National Academies Press, 2012.
MLA (9րդ խմբ.) ՄեջբերումNational Research Council (U.S.). Committee on a Conceptual Framework for New K-12 Science Education Standards and Inc ebrary. A Framework for K-12 Science Education: Practices, Crosscutting Concepts, and Core Ideas. National Academies Press, 2012.