Hutagalung, Leo, AGUS PURWANTO, and Agustian Budi Prasetya. “The Five Leadership Style in Time of Pandemic Covid-19 Throughout Industrial Revolution 4.0 As Compared to Humane Leadership”. INTERNATIONAL JOURNAL OF SOCIAL, POLICY AND LAW 1, no. 1 (December 17, 2020): 79-87. Accessed November 19, 2024. https://ijospl.org/index.php/ijospl/article/view/21.