(2000). Political Knowledge of Students in Grades 9-12. U.S. Department of Education.
Chicago-Zitierstil (17. Ausg.)Political Knowledge of Students in Grades 9-12. U.S. Department of Education, 2000.
MLA-Zitierstil (9. Ausg.)Political Knowledge of Students in Grades 9-12. U.S. Department of Education, 2000.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.