1. Boeije, H. (2014) Analyseren in kwalitatief onderzoek. Denken en doen (2e druk). Den Haag: Boom Lemma uitgevers.
2. Bryman, A. (2012). Social research methods (4th ed.). New York: Oxford University Press Inc.
3. Erickson, L. D., McDonald, S., & Elder, G. H. (2009). Informal mentors and education: Complementary or compensatory resources? Sociology of Education, 82(4), 344–367. https://doi.org/10.1177/003804070908200403.
4. Evers, J. (2015). Kwalitatieve analyse: kunst én kunde. Amsterdam: Boom Lemma uitgevers.
5. Fusch, P., & Ness, L. R. (2015). Are we there yet? Data saturation in qualitative research. The Qualitative Report, 20, 1408–1416.