Fitri Marisa, Sarifah Shakinah Syed Ahmad, Zeratul Izzah Mohd Yusof, Fachrudin Hunaini, and Tubagus Mohammad Akhriza Aziz, “Segmentation Model of Customer Lifetime Value in Small and Medium Enterprise (SMEs) using K-Means Clustering and LRFM Model”, ijie, vol. 11, no. 3, Sep. 2019, Accessed: Jul. 23, 2024. [Online]. Available: https://penerbit.uthm.edu.my/ojs/index.php/ijie/article/view/4661