Edward Litya, V., R. Permana, and S. Armonitha. “CRM IN RETAINING CUSTOMERS TO INCREASE VISICOM STORE SALES WITH THE ANALYTICAL HIERARCHY PROCESS METHOD”. Jurnal Ipteks Terapan, vol. 17, no. 2, Aug. 2023, pp. 472-7, http://publikasi.lldikti10.id/index.php/jit/article/view/1649.