RIYADI, A. A. Halaman Depan Chart Datum Vol 9 No 1. Jurnal Chart Datum, [S. l.], v. 9, n. 1, 2023. Disponível em: https://jurnal.sttalhidros.ac.id/index.php/chartdatum/article/view/285. Acesso em: 17 sep. 2024.