"Hyperpigmentation". Dermatalogic Disease Database. American Osteopathic College of Dermatology. 13 Şubat 2002 tarihinde kaynağından arşivlendi. Erişim tarihi: 8 Mart 2006.
doi.org
Chandra (May 2012). "Hydroquinone therapy for post-inflammatory hyperpigmentation secondary to acne: not just prescribable by dermatologists". Acta Dermato-Venerologica. 92 (3): 232-5. doi:10.2340/00015555-1225. PMID22002814.
nih.gov
ncbi.nlm.nih.gov
Chandra (May 2012). "Hydroquinone therapy for post-inflammatory hyperpigmentation secondary to acne: not just prescribable by dermatologists". Acta Dermato-Venerologica. 92 (3): 232-5. doi:10.2340/00015555-1225. PMID22002814.
web.archive.org
"Hyperpigmentation". Dermatalogic Disease Database. American Osteopathic College of Dermatology. 13 Şubat 2002 tarihinde kaynağından arşivlendi. Erişim tarihi: 8 Mart 2006.