Rokhman, W., H. A. Rivai, and A. Adewale. “An Examination of the Mediating Effect of Islamic Work Ethic on the Relationships Between Transformational Leadership and Work Outcomes”. Gadjah Mada International Journal of Business, Vol. 13, no. 2, June 2011, pp. 125-42, https://jurnal.ugm.ac.id/v3/gamaijb/article/view/15334.