ANDRY, M.; SHUFYANI, F.; NASUTION, M. A.; FADILLAH, M. F.; TAMBUNAN, I. J.; REZALDI, F. Phytochemical Screening and Analysis of Caffeine Content in Arabica Ground Coffee in Takengon City Using Spectrophotometry Ultraviolet. Journal of Pharmaceutical and Sciences, [S. l.], v. 6, n. 3, p. 998–1006, 2023. DOI: 10.36490/journal-jps.com.v6i3.176. Disponível em: https://journal-jps.com/new/index.php/jps/article/view/176. Acesso em: 23 may. 2024.