National Association of Secondary School Principals. (1976). Task Force on Educational programs for disruptive Youth.
Chicago-Zitierstil (17. Ausg.)National Association of Secondary School Principals. Task Force on Educational Programs for Disruptive Youth. Baltimore, 1976.
MLA-Zitierstil (8. Ausg.)National Association of Secondary School Principals. Task Force on Educational Programs for Disruptive Youth. 1976.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.