Irfan, Mohammad, Andharini Dwi Cahyani, and Fika Hastarita R. “SISTEM REKOMENDASI: BUKU ONLINE DENGAN METODE COLLABORATIVE FILTERING”. JURNAL TEKNOLOGI TECHNOSCIENTIA 7, no. 1 (August 1, 2014): 076–84. Accessed December 5, 2024. https://ejournal.akprind.ac.id/index.php/technoscientia/article/view/612.