Ichwal Subagja (2019) “PERANAN PERUSAHAAN MIGAS NASIONAL TERHADAP KETERSEDIAAN ENERGI INDONESIA (Study di Perusahaan PT. Bahtera Abadi Gas Kabupaten Tuban)”, JUSTITIABLE - Jurnal Hukum, 1(2), pp. 117–130. doi: 10.56071/justitiable.v1i2.49.