Inskip, Mike, Caterina Longo, and Afaf Haddad. “Two Adjacent Individual Fibroepithelioma of Pinkus of the umbilicus—one Pink, One pigmented—a Case Report and Review of the Literature”. Dermatology Practical & Conceptual (April 30, 2016): 17–20. Accessed June 3, 2026. https://dpcj.org/index.php/dpc/article/view/dermatol-pract-concept-articleid-dp0602a04.