Triadi Yuliarto , R. ., dan G. . Permata Gusti. “ANALYSIS OF CAUSES OF SIGNIFICANT INCREASE IN THE INDOSAT PROFIT IN 2019”. Jurnal Equilibrium Manajemen Fakultas Ekonomi Universitas Panca Bhakti, vol. 3, no. 1, Januari 2020, https://jurnal.upb.ac.id/index.php/equalibrium/article/view/83.