National Council for the Social Studies & Adler, S. A. (2013). National curriculum standards for social studies: A framework for teaching, learning and assessment (4. print.). NCSS.
Chicago-Zitierstil (17. Ausg.)National Council for the Social Studies und Susan A. Adler. National Curriculum Standards for Social Studies: A Framework for Teaching, Learning and Assessment. 4. print. Silver Springs, Md: NCSS, 2013.
MLA-Zitierstil (9. Ausg.)National Council for the Social Studies und Susan A. Adler. National Curriculum Standards for Social Studies: A Framework for Teaching, Learning and Assessment. 4. print. NCSS, 2013.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.