FAUZIAH ZAIN; NIA NOVRANDA PERTIWI; MINDA SARI LUBIS; RAFITA YUNIARTI. Penentuan Kadar Hidrokuinon dan Asam Retinoat Pada Krim Malam Yang Dijual Dikota Medan Secara Spektrofotometri Ultraviolet Metode Dual Wavelenght. Bulletin of Community Engagement, [S. l.], v. 4, n. 3, p. 35–45, 2024. DOI: 10.51278/bce.v4i3.1498. Disponível em: https://mail.attractivejournal.com/index.php/bce/article/view/1498. Acesso em: 25 jun. 2026.