Wolff, K., Johnson, R. A., Saavedra, A. P., & Fitzpatrick, T. B. (2013). Fitzpatrick's color atlas and synopsis of clinical dermatology (7th ed. / Klaus Wolff, Richard Allen Johnson, Arturo P. Saavedra.). McGraw-Hill Medical.

Wolff, Klaus, Richard Allen Johnson, Arturo P. Saavedra, und Thomas B. Fitzpatrick. Fitzpatrick's Color Atlas and Synopsis of Clinical Dermatology. 7th ed. / Klaus Wolff, Richard Allen Johnson, Arturo P. Saavedra. McGraw-Hill Medical, 2013.