Kang, Eungoo. “The Relationship Between Reinforcement of Employee’s Customer-Centric Behavior and Employee Motivation Factors”. Advances in Social Sciences Research Journal 7, no. 7 (July 26, 2020): 338–347. Accessed February 4, 2026. https://www.journals.scholarpublishing.org/index.php/ASSRJ/article/view/8640.