APA

Cotton K., . (2003). Principals and student achievement: what the research says. Alexandria, Va: |b Association for Supervision and Curriculum Development.

Chicago

Cotton Kathleen, . 2003. Principals and student achievement: what the research says. Alexandria, Va: |b Association for Supervision and Curriculum Development.

Harvard

Cotton K., . (2003). Principals and student achievement: what the research says. Alexandria, Va: |b Association for Supervision and Curriculum Development.

MLA

Cotton Kathleen, . Principals and student achievement: what the research says. Alexandria, Va: |b Association for Supervision and Curriculum Development. 2003.