Cita APA (7a ed.)

Kerkhof, P. C. M. v. d. (2003). Textbook of psoriasis (2nd ed.). Blackwell.

Cita Chicago Style (17a ed.)

Kerkhof, Petrus Cornelis Maria van de. Textbook of Psoriasis. 2nd ed. Malden, Mass.: Blackwell, 2003.

Cita MLA (9a ed.)

Kerkhof, Petrus Cornelis Maria van de. Textbook of Psoriasis. 2nd ed. Blackwell, 2003.