Panggabean, N. F., Fahri, T. S., Gunawan, W., & Hendry, H. (2021). The Influence of Leadership Style, Motivation and Discipline on Employee Performance at PT Sumo Internusa Indonesia. International Journal of Social Science and Business, 5(2), 284–290. https://doi.org/10.23887/ijssb.v5i2.34929