Majeed, Sadia, Nasir Mahmood, and Saeed Ahmed. 2018. “Comparative Efficacy of Topical 4% Hydroquinone Vs. 4% Hydroquinone Plus 10% Mandelic Acid in the Treatment of Melasma”. Journal of Pakistan Association of Dermatologists 28 (3):311-14. http://jpad.com.pk/index.php/jpad/article/view/1265.