1. Maclean, R., and Pavlova, M. (2013). Revisiting Global Trends in TVET: Reflections on Theory and Practice, UNESCO-UNEVOC International Centre for Technical and Vocational Education and Training.
2. St. John, E.P. (2022). Co-Learning in Higher Education: Community Wellbeing, Engaged Scholarship, and Creating Futures, Taylor & Francis.
3. World Bank Databank (2023, March 09). World Development Indicators [Data File]. Available online: http://databank.worldbank.org/data/reports.aspx?source=world-development-indicators.
4. OECD (2015). ISCED 2011 Operational Manual, OECD.
5. United Nations (2023, March 30). World Economic Situation and Prospects. Available online: https://www.un.org/development/desa/dpad/wp-content/uploads/sites/45/WESP2019_BOOK-ANNEX-en.pdf.