APA-viite (7. p.)
Cotton, K. (2003). Principals and student achievement: What the research says. Association for Supervision and Curriculum Development.
Chicago-viite (17. p.)
Cotton, Kathleen. Principals and Student Achievement: What the Research Says. Alexandria, Va.: Association for Supervision and Curriculum Development, 2003.
MLA-viite (9. p.)
Cotton, Kathleen. Principals and Student Achievement: What the Research Says. Association for Supervision and Curriculum Development, 2003.
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