Zeni Arya, Muhammad Amin, and Indra Ramadona Harahap. “Web-Based Operational CRM System for Client Retention in Wedding Organizer MSMEs: Design and Black-Box Validation”. Journal of Computers and Digital Business 5, no. 3 (September 29, 2026): 390–395. Accessed November 9, 2026. https://jurnal.delitekno.co.id/index.php/jcbd/article/view/1070.