Protheroe, N. (2007). Elements of highly effective mathematics programs. Educational Research Service.
Chicago-Zitierstil (17. Ausg.)Protheroe, Nancy. Elements of Highly Effective Mathematics Programs. Alexandria, VA: Educational Research Service, 2007.
MLA-Zitierstil (9. Ausg.)Protheroe, Nancy. Elements of Highly Effective Mathematics Programs. Educational Research Service, 2007.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.