Não informado. (2001). School effectiviness and school improvement. Swets & Zeitlinger.
Chicago-referens (17:e uppl.)Não informado. School Effectiviness and School Improvement. Lisse, Holanda: Swets & Zeitlinger, 2001.
MLA-referens (8:e uppl.)Não informado. School Effectiviness and School Improvement. Swets & Zeitlinger, 2001.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.