Prasetyo T, Wiliantoro P, Feridanto A, Julyansyah I, Syafaah LSK. E-Commerce Activity Clustering Based on Online Shopping and Income per Capita in Indonesian Cities. JAFOTIK [Internet]. 2026 Sep. 16 [cited 2026 Sep. 23];4(2):79-84. Available from: https://journal.lenterailmu.com/index.php/jafotik/article/view/144