Sergiovanni, T. J. (1990). Value-added leadership: How to get extraordinary performance in schools. Harcourt Brace Jovanovich, HBJ Leadership.
Chicago-Zitierstil (17. Ausg.)Sergiovanni, Thomas J. Value-added Leadership: How to Get Extraordinary Performance in Schools. San Diego: Harcourt Brace Jovanovich, HBJ Leadership, 1990.
MLA-Zitierstil (9. Ausg.)Sergiovanni, Thomas J. Value-added Leadership: How to Get Extraordinary Performance in Schools. Harcourt Brace Jovanovich, HBJ Leadership, 1990.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.