1. A section of melanosis cutis;Pernet G;Proc R Soc Med,1910
2. Climate ‐ Sri Lanka. “Sri Lanka Climate: Average Weather Temperature Precipitation When to Go”.https://www.climatestotravel.com/climate/sri-lanka
3. Melasma Induced by Oral Contraceptive Drugs
4. Melanosis cutis, with melanotic carcinoma;Adamson HG;Proc R Soc Med,1922