Gaya APA

Lookingbill, D, P., Marks, J, G. (1993). Principles of Dermatology (2nd.Ed.). New York: W.B.Saunders Company.

Gaya MLA

Lookingbill, Donald, P., Marks, James, G.. "Principles of Dermatology". 2nd.Ed. New York: W.B.Saunders Company, 1993. Text.