?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=NN%2C+Riska+Aini+Sari&rft.aulast=NN&rft.aufirst=Riska+Aini+Sari&rft.date=25+Januari+2012&rft.atitle=nn&rft.title=Digital+Library&rft.genre=article