Mahfud, Imam, Mariya Ulpah, and Inti Ulfi Sholichah. “The Role of Spiritual Corporate Culture in Improving Company Performance”. Journal of Economics and Business Letters 4, no. 6 (December 31, 2024): 1–10. Accessed July 27, 2025. https://www.journal.privietlab.org/index.php/JEBL/article/view/336.