Cita APA (7a ed.)

Mitchell, T., & Penzer, R. (2005). Psoriasis (2nd ed.). Class.

Cita Chicago Style (17a ed.)

Mitchell, Tim, y Rebecca Penzer. Psoriasis. 2nd ed. London: Class, 2005.

Cita MLA (9a ed.)

Mitchell, Tim, y Rebecca Penzer. Psoriasis. 2nd ed. Class, 2005.