“Penerapan Customer Relationship Management (CRM) Pada UMKM Mie Pangsit Ayam Bangka Mr.Ong Batam”. Management Studies and Entrepreneurship Journal (MSEJ) 4, no. 3 (May 27, 2023): 2785–2795. Accessed May 21, 2026. https://journal.yrpipku.com/index.php/msej/article/view/2187.