Cotton, K. (2003). Principals and student achievement: What the research says. Association for Supervision and Curriculum Development.
Chicago-Zitierstil (17. Ausg.)Cotton, Kathleen. Principals and Student Achievement: What the Research Says. Alexandria, Va: Association for Supervision and Curriculum Development, 2003.
MLA-Zitierstil (9. Ausg.)Cotton, Kathleen. Principals and Student Achievement: What the Research Says. Association for Supervision and Curriculum Development, 2003.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.