?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Ellis%2C+J+W&rft.aufirst=J+W&rft.aulast=Ellis&rft.title=A+critique+of+criteria+of+teacher+effectiveness+with+particular+reference+to+the+assessment+of+practical+teaching&rft.inst=Institute+of+Education%2C+University+of+London&rft.tpages=0&rft.degree=Doctoral&rft.date=1979