WILLYA HENDRA; MANGKUSUBROTO, Kuntoro. The Stumbling Block of Net Profit Margin: A Case Study of PT PLN Batubara. Jurnal Aplikasi Bisnis dan Manajemen, [S. l.], v. 8, n. 2, p. 394, 2022. DOI: 10.17358/jabm.8.2.394. Disponível em: https://journal.ipb.ac.id/jabm/article/view/40046. Acesso em: 25 dec. 2025.