References
- Jansen GT. Westbrook KC. Cancer of the skin In: Suen JY. Myers EN. eds. Cancer of the head and neck. New York: Longman (Churchill Livingstone). 1981: 212–41
- Unna PG. The histopathology of the diseases of the skin. Walker N. trans. New York: Macmillan. 1896
- Gumport SL, Harris MN, Roaes DF, et al. The diagnosis and management of common skin cancers. CA 1981: 31(21: 79–90