?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=T&rft.aulast=Male&rft.au=Male%2C+T&rft.atitle=Is+the+national+professional+qualification+for+headship+making+a+difference&rft.title=School+Leadership+and+Management&rft.issue=4&rft.volume=21&rft.date=December+2001&rft.issn=1363-2434&rft.pages=463-477&rft.genre=article