Lua APA (7ú heag.)
Cotton, K. (2003). Principals and student achievement: What the research says. Association for Supervision and Curriculum Development.
Lua i Stíl Chicago (17ú heag.)
Cotton, Kathleen. Principals and Student Achievement: What the Research Says. Alexandria, Va.: Association for Supervision and Curriculum Development, 2003.
Lua MLA (9ú heag.)
Cotton, Kathleen. Principals and Student Achievement: What the Research Says. Association for Supervision and Curriculum Development, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.