1. Aldridge, D. (1998). The politics of symptoms and marital conflict. In Suicide: The tragedy of hopelessness. London and Philadelphia: Jessica Kingsley Publishers.
2. Youth risk behavior surveillance—United States, 1997;Morbidity and Mortality Weekly Report,1998
3. Depression, hopelessness and suicidal behavior in Chinese and American psychiatric patients;Chiles;American Journal of Psychiatry,1989
4. What is the mechanism by which suicide attempts predispose to later suicide attempts? A mathematical model;Clark;Journal of Abnormal Psychology,1989
5. CSRP. (2005). Statistics. Hong Kong Jockey Club Centre for Suicide Research and Prevention, University of Hong Kong, Hong Kong. URL: 〈http://csrp.hku.hk/WEB/eng/statistics.asp〉 [WWW page].