Current Issues in Middle Level Education. National Association of Professors of Middle Level Education (NAPOMLE).
Chicago-referens (17:e uppl.)Current Issues in Middle Level Education. National Association of Professors of Middle Level Education (NAPOMLE).
MLA-referens (9:e uppl.)Current Issues in Middle Level Education. National Association of Professors of Middle Level Education (NAPOMLE).
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.