1. Ahola, S. (2014). Finland. In: S. Ahola, T. Hedmo, J-P Thomsen, and A. Vabø, eds., Organisational Features of Higher Education: Denmark, Finland, Norway & Sweden, Oslo: Nordic Institute for Studies in Innovation, Research and Education (NIFU), pp. 33–57.
2. Ahola, S., and Galli, L. (2012). New Degree for a New Career? Career Development of Finnish Polytechnic Master’s Degree Graduates. Journal of Education and Work, 25(5), pp. 537–553.
3. Aro, M. (2014). Koulutusinflaatio. Koulutusekspansio ja koulutuksen arvo Suomessa 1970–2008. [Educational Inflation. The Expansion of Education and the Value of Degrees in Finland 1970–2008] Turku: University of Turku.
4. Billig, M. (1987). Arguing and Thinking. A Rhetorical Approach to Social Psychology. Cambridge: Cambridge University Press.
5. Bills, D. (2003). Credentials, Signals, and Screens: Explaining the Relationship Between Schooling and Job Assignment. Review of Educational Research, 73(4), pp. 441–449.