EFFENDY DE LUX PUTRA; SITI MORIN SINAGA; HARFIANSYAH, M. Deddy. Simultaneous quantification of B-complex vitamins in tablet dosage form by ultraviolet spectrophotometry using the absorption factor method. Journal of Natural Sciences and Mathematics Research, [S. l.], v. 11, n. 1, p. 84–91, 2025. DOI: 10.21580/jnsmr.v11i1.26111. Disponível em: https://journal.walisongo.ac.id/index.php/JNSMR/article/view/26111. Acesso em: 12 dec. 2025.