Analysis of Caffeine in Tablet Dosage Form with Spectrophotometric and Iodometric Back Titration Methods. Journal of Tropical Pharmacy and Chemistry , [S. l.], v. 4, n. 6, p. 271–280, 2019. DOI: 10.30872/j.trop.pharm.chem.v4i6.193. Disponível em: https://jtpc.ff.unmul.ac.id/index.php/jtpc/article/view/193. Acesso em: 19 apr. 2025.