1. APSA [American Political Science Association] (2004): American Democracy in an Age of Rising Inequality. Report of the Task Force on Inequality and American Democracy. http://www.apsanet.org/portals/54/Files/Task%20Force%20Reports/taskforcereport.pdf, abgerufen 7. 8. 2017.
2. APSA [American Political Science Association] (2011): Political Science in the 21st Century. Report of the Task Force on Political Science in the 21st Century. Washington DC: APSA, www.apsanet.org/portals/54/Files/TaskForceReports/TF_21stCentury_AllPgs_webres90.pdf, abgerufen 14. 9. 2016.
3. Atkinson, Anthony B. (2015): Inequality. What Can Be Done? Cambridge/London: Harvard University Press.
4. Bartels, Larry M. (2008): Unequal Democracy. The Political Economy of the New Gilded Age. Princeton/Oxford: Princeton University Press.
5. Bartels, Larry M. et al. (2004): Inequality and American Governance. Memorandum, APSA Task Force on Inequality and American Democracy. http://www.apsanet.org/portals/54/Files/Memos/governancememo.pdf, abgerufen 7. 8. 2017.