?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=Purushothman+Ravichandran%2C+&rft.aulast=Purushothman+Ravichandran&rft.degree=PhD&rft.date=2018&rft.title=Developing+Student+Model+for+Intelligent+Tutoring+System&rft.inst=Open+University+Malaysia