SAFIRA, Heraria Ina; AUFA, Muhammad. Billing System Based on Macro Scheduler at PT Petrokimia Gresik. Indonesian Vocational Research Journal, [S. l.], v. 2, n. 1, p. 39–46, 2022. Disponível em: https://journal.umg.ac.id/index.php/ivrj/article/view/4803. Acesso em: 28 jun. 2026.