APA Style

HAAN, L, D. et al (2015). Obsessive-Compulsive Symptoms in Schizophrenia (1). Cham, Switzerland: Springer Cham.

MLA Style

HAAN, Lieuwe, De. et al. "Obsessive-Compulsive Symptoms in Schizophrenia". 1 Cham, Switzerland: Springer Cham, 2015. Text.