?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Andrew+John&rft.au=Cummings%2C+Andrew+John&rft.aulast=Cummings&rft.date=2002&rft.tpages=138&rft.title=NPQH+%3A+the+making+of+a+curriculum+for+headship&rft.inst=Institute+of+Education%2C+University+of+London&rft.degree=Doctoral