Fadillah, Yusuf Rachmat, Yuaniko Paramitra, Ismail Razak, and Dhistianti Mei Rahmawantar. “From Quality to Loyalty: How Product Excellence and Effective Promotion Drive Customer Commitment”. Research of Business and Management 2, no. 2 (August 21, 2024): 108–116. Accessed August 2, 2025. https://sanscientific.com/journal/index.php/rbm/article/view/295.