?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.au=Cheong+Heng+Weng%2C+&rft.aulast=Cheong+Heng+Weng&rft.date=30+November+2015&rft.title=Readability+of+Modules+and+its+Relationship+with+Student+Performance+in+Open+Distance+Learning+(ODL)&rft.genre=proceeding