(2007). Course Credit Accrual & Dropping Out of High School. U.S. Department of Education.
Chicago-Zitierstil (17. Ausg.)Course Credit Accrual & Dropping Out of High School. U.S. Department of Education, 2007.
MLA-Zitierstil (9. Ausg.)Course Credit Accrual & Dropping Out of High School. U.S. Department of Education, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.