Praktik Monopoli PT Perusahaan Gas Negara Di Area Medan; Studi Putusan Terhadap Putusan Mahkamah Agung Nomor 511 K/Pdt.Sus KPPU/2018. JOURNAL of LEGAL RESEARCH, [S. l.], v. 1, n. 5, 2019. DOI: 10.15408/jlr.v1i5.12178. Disponível em: https://journal.uinjkt.ac.id/jlr/article/view/12178. Acesso em: 25 jan. 2026.