Hutagalung, L., PURWANTO, A., Prasetya, A. B. and Pramono, R. (2020) “TRANSFORMATIONAL LEADERSHIP FOR ENTERING INDUSTRIAL REVOLUTION 4.0 AS COMPARED WITH HUMANE LEADERSHIP AND ‘U’ THEORY”, IJOSPOL - International Journal of Social, Policy and Law , 1(1), pp. 73-78. doi: 10.8888/ijospl.v1i1.20.