?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=72140011&rft.au=72140011%2C+DERRY+SANTOSO&rft.aufirst=DERRY+SANTOSO&rft.tpages=40&rft.inst=Universitas+Kristen+Duta+Wacana&rft.title=SISTEM+REKOMENDASI+E-COMMERCE+AMAZON+BERBASIS+COLLABORATIVE+FILTERING&rft.degree=Bachelor&rft.date=July+2018