Sergiovanni, T. J. (1990). Value-added leadership: How to get extraordinary performance in schools. Harcourt Brace Jovanovich, HBJ Leadership.
Chicago-viite (17. p.)Sergiovanni, Thomas J. Value-added Leadership: How to Get Extraordinary Performance in Schools. San Diego: Harcourt Brace Jovanovich, HBJ Leadership, 1990.
MLA-viite (9. p.)Sergiovanni, Thomas J. Value-added Leadership: How to Get Extraordinary Performance in Schools. Harcourt Brace Jovanovich, HBJ Leadership, 1990.
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