N. Basmalah, N. N. A. Hariadi, and M. A. Mulki, “Article Review: The Effect of Mobile Phase Ratio in the Analysis of Hydroquinone Compounds in Cosmetic Preparations Using the High Performance Liquid Chromatography (HPLC)”, JPS, vol. 8, no. 2, pp. 1309–1317, Jun. 2025.