Willms, J. D. (2003). Student engagement at school: A sense of belonging and participation : results from PISA 2000. Organisation for Economic Co-operation and Development.
Lua i Stíl Chicago (17ú heag.)Willms, Jon Douglas. Student Engagement at School: A Sense of Belonging and Participation : Results from PISA 2000. Paris, France: Organisation for Economic Co-operation and Development, 2003.
Lua MLA (9ú heag.)Willms, Jon Douglas. Student Engagement at School: A Sense of Belonging and Participation : Results from PISA 2000. Organisation for Economic Co-operation and Development, 2003.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.