?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Eng&rft.aulast=Ong&rft.au=Ong%2C+Eng&rft.degree=Masters&rft.inst=Universiti+Utara+Malaysia&rft.title=THE+EFFECTIVENESS+OF+COMPUTER-ASSISTED+INSTRUCTION+IN+LEARNING+SCIENCE&rft.date=1999&rft.tpages=103