SURYANTO, E. Form Berlangganan. CHEMISTRY PROGRESS, [S. l.], v. 6, n. 2, 2019. DOI: 10.35799/cp.6.2.2013.3504. Disponível em: https://ejournal.unsrat.ac.id/v3/index.php/chemprog/article/view/3504. Acesso em: 4 jul. 2024.