APA Style

Wolff, K. et al (2009). Fitzpatrick's color atlas and synopsis of clinical dermatology : Color atlas and synopsis of clinical dermatology (6th ed.). New York: McGraw-Hill.

MLA Style

Wolff, Klaus. et al. "Fitzpatrick's color atlas and synopsis of clinical dermatology : Color atlas and synopsis of clinical dermatology". 6th ed. New York: McGraw-Hill, 2009. Text.