?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=O'Sullivan&rft.au=O'Sullivan%2C+Anthony+Vincent&rft.aufirst=Anthony+Vincent&rft.tpages=328&rft.title=The+foreign+language+coursebook%3A+a+study+of+its+role+in+learner+motivation.&rft.inst=Institute+of+Education%2C+University+of+London&rft.degree=Doctoral&rft.date=1990