1. Ainley, J., and Schulz, W. (2011). Expected participation in protest activities among lower secondary students in 38 countries. In Annual Meetings of the American Educational Research Association in New Orleans, 8–12 April 2011. Retrieved from https://iccs.acer.org/files/AERA-ICCS-Protest-Activities(NewOrleans2011).pdf
2. André, S., Dronkers, J., and Need, A. (2014). To vote or not to vote? A macro perspective: electoral participation by immigrants from different countries of origin in 24 European countries of destination. Research on Finnish Society, 7, 7– 20.
3. Caro, D. H., and Schulz, W. (2012). Ten hypotheses about tolerance toward minorities among Latin American adolescents. Citizenship, Social and Economics Education, 11(3), 213. https://doi.org/10.2304/csee.2012.11.3.213
4. De Groof, S., Elchardus, M., Franck, E., and Kavadias, D. (2008). The influence of civic knowledge versus democratic school experiences on ethnic tolerance of adolescents: a multilevel analysis. Retrieved from http://www.iea.nl/sites/default/files/irc/IRC2008_DeGroof_Elchardus_etal.pdf
5. Diazgranados, S., and Sandoval-Hernández, A. (2015). Young people’s attitudes toward equal rights for ethnic/racial minorities and immigrants: the effect of contact and supportive school environments in the European Union. In M. M. Isaac (ed.), Tolerance through education: mapping the determinants of young people’s attitudes towards equal rights for immigrants and ethnic/racial minorities in Europe. pp. 74-110 Luxembourg: Publications Office of the European Union.