(1)
maggadani, baitha P.; harmita; harahap, yahdiana; HUTABALIAN, H. L. N. SIMULTANEOUS IDENTIFICATION AND QUANTIFICATION OF HYDROQUINONE, TRETINOIN AND BETAMETHASONE IN COSMETIC PRODUCTS BY ISOCRATIC REVERSED PHASE HIGH PERFORMANCE LIQUID CHROMATOGRAPHY. Int J App Pharm 2019, 11, 181-185.