Halim, Fernando, Ardie Halim Wijaya, and Wiyono -. “Analisis Dan Perancangan E-Commerce Berbasis Web Dengan Penerapan Sistem Perekomendasian Menggunakan Metode Collaborative Filtering Serta Metode Up, Down, Cross Selling”. ALGOR 4, no. 1 (September 15, 2022): 28–43. Accessed April 25, 2024. https://jurnal.buddhidharma.ac.id/index.php/algor/article/view/1516.