MLA

Rigopoulos, Dimitris, and Antonella Tosti. Nail Psoriasis. Springer International Publishing, 2014.

APA

Rigopoulos, D., & Tosti, A. (2014). Nail Psoriasis. Springer International Publishing.

Chicago

Rigopoulos, Dimitris, and Antonella Tosti. Nail Psoriasis. : Springer International Publishing, 2014.