Zubair, Shazia, and Ghulam Mujtaba. 2016. “Comparison of Efficacy of Topical 2% Liquiritin, Topical 4% Liquiritin and Topical 4% Hydroquinone in the Management of Melasma”. Journal of Pakistan Association of Dermatologists 19 (3):158-63. https://doi.org/10.66344/jpad.19.3.2009.533.