1. Promoting Mental Health: Concepts, Emerging Evidence, Practice: A Report of the World Health Organization, Department of Mental Health and Substance Abuse in Collaboration with the Victorian Health Promotion Foundation and the University of Melbourne;World Health Organization,2005
2. Depression and Other Common Mental Disorders: Global Health Estimates;World Health Organization,2017
3. An overview of systematic reviews on the public health consequences of social isolation and loneliness
4. Happiness, freedom and control
5. Impacts of COVID-19 Pandemic on mental health in Malaysia: A Single Thread of Hope;Shanmugam;Malays. J. Psychiatry,2020