Analytical Methods Validation of Retinoic Acid and Hydroquinone Using Ultra High Performance Liquid Chromatography in Medicinal Cream. Pharmaceutical and Biomedical Sciences Journal (PBSJ), [S. l.], v. 1, n. 1, p. 7–12, 2019. DOI: 10.15408/pbsj.v1i1.12689. Disponível em: https://journal.uinjkt.ac.id/pbsj/article/view/12689. Acesso em: 21 dec. 2025.