1. Atherton, J., Hadfield, P., & Meyers, R. (2008). Threshold concepts in the wild. Presented at the threshold concepts: From theory to practice conference.
2. Barnett, R. (2004). Learning for an unknown future. Higher Education Research and Development, 23(3), 247–260.
3. Barnett, R. (2006). Vocational knowledge and vocational pedagogy. In M. Young & J. Gamble (Eds.), Knowledge, curriculum and qualifications for South African further education (pp. 143–157). Cape Town: HSRC Press.
4. Beddie, F. (2014). A differentiated model for tertiary education: Past ideas, contemporary policy and future possibilities. Adelaide: NCVER.
5. Billett, S. (2001). Learning through work: Workplace affordances and individual engagement. Journal of Workplace Learning, 13(5), 209–214.