Utomo, Sudibyo Budi. “The Influence of Discipline on Work Performance of J&T Express Employees at Sukahaji Branch, Majalengka Regency”. Indonesian Journal of Islamic Economics and Finance 3, no. 1 (January 31, 2023): 53–60. Accessed February 14, 2026. https://ejournal.insuriponorogo.ac.id/index.php/jief/article/view/5250.