1. Pew Research Center. 2014. “Global Research Diversity.” www.pewforum.org/2014/04/04/global-religious-diversity (Accessed on May 1, 2014).
2. Religions, Constitutions, and the State: A Cross-National Study
3. Pew Research Center. 2016. “Global Restrictions on Religion 2007–2014.” www.pewforum.org/datasets/global-restrictions-on-religion-2007-2013 (Accessed on October 1, 2016).
4. People's opium? Religion and economic attitudes
5. Shah T. , and A. Gill . 2013. “Religious Freedom, Democratization, and Economic Development.” Presented at the Annual Meeting of the Association for the Study of Religion, Economics, and Culture, Washington, DC.