Prayoga, Alfian, and Mala Sondang Silitonga. “Strategic Approaches to Improving Service Quality at Hospital”. International Journal of Economics Development Research (IJEDR) 6, no. 6 (October 18, 2025): 3425–3441. Accessed October 20, 2025. https://journal.yrpipku.com/index.php/ijedr/article/view/9410.