1. Alvesson, M., & Skjöldberg, K. (2009). Reflexive methodology: New vistas for qualitative research. Sage.
2. Anderson, J. (1995). Translator’s introduction. In A. Honneth (Ed.), Struggle for recognition: The moral grammar of social conflicts (pp. x–xxi). Polity Press.
3. Blaikie, N., & Priest, J. (2017). Social research: Paradigms in Action. Polity Press. https://doi.org/10.1111/ruso.12314
4. EMCDDA. (2019a). Denmark – Country drug report 2019. https://web.archive.org/web/20191016143922/https://www.emcdda.europa.eu/countries/drug-reports/2019/denmark_en
5. EMCDDA. (2019b). Portugal – Country drug report 2019. https://web.archive.org/web/20191016144948/https://www.emcdda.europa.eu/countries/drug-reports/2019/portugal_en