SURYANTO, E. Formulir Berlangganan. CHEMISTRY PROGRESS, [S. l.], v. 8, n. 1, 2019. DOI: 10.35799/cp.8.1.2015.9403. Disponível em: https://ejournal.unsrat.ac.id/v3/index.php/chemprog/article/view/9403. Acesso em: 7 may. 2024.