APA-viite (7. p.)

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

Chicago-viite (17. p.)

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

MLA-viite (9. p.)

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