?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Aulia+Rizki&rft.aulast=Raihana&rft.au=Raihana%2C+Aulia+Rizki&rft.inst=Universitas+AMIKOM+Yogyakarta&rft.title=SISTEM+REKOMENDASI+PRODUK+E-COMMERCE+BERBASIS+COLLABORATIVE+FILTERING&rft.date=19+June+2026&rft.degree=S1+-+Sarjana