1. OSCE. (2009). Athens Ministerial Council Decision No. 9/09: Combating Hate Crimes. OSCE. Retrieved from http://www.osce.org/cio/40695
2. Parris, C. L., & Scheuerman, H. L. (2015). How Social Movements Matter: Including Sexual Orientation in State-Level Hate Crime Legislation. In Research in Social Movements, Conflicts and Change (Vol. 38, pp. 229–257). Emerald Group Publishing Limited. Retrieved from http://www.emeraldinsight.com/doi/abs/10.1108/S0163-786X20150000038008
3. Institute of Education, University of Potsdam, Bogazici University of Istanbul, University of Banská Bystrica, University of Tilburg, & Fontys University of Applied Sciences Tilburg. (2012). Atlas of European Values. Retrieved from http://www.atlasofeuropeanvalues.eu/new/europa.php?ids=240&year=2008
4. PlanetRomeo. (2015, May). Gay Happiness Index. Retrieved August 3, 2016, from https://www.planetromeo.com/en/lgbt/gay-happiness-index/
5. Perry, J. (2014). Evidencing the case for hate crime. In N. Chakraborti & J. Garland (Eds.), Responding to hate crime: The case for connecting policy and research (pp. 71–84). Bristol: The Policy Press.