APA Style

G., D, G., Reich, J. (1993). Personality Disorders : Epidemiology of Mental Disorders and Psychosocial Problems . Geneva: World Health Organization.

MLA Style

G., De, Girolamo,., Reich, J.H.. "Personality Disorders : Epidemiology of Mental Disorders and Psychosocial Problems". Geneva: World Health Organization, 1993. print.