1. Abrahamsson, K., Rubenson, K., & Slowey, M. (Eds) (1988). Adults in the academy: International trends in adult and higher education. Stockholm: Swedish National Board of Education. Retrieved 12 April 2024 from https://files.eric.ed.gov/fulltext/ED305450.pdf
2. AONTAS (Irish National Adult Learning Organisation) (2019). Lifelong learning summit: The future of lifelong learning. [conference programme, 18 November]. Dublin: AONTAS. Retrieved 17 April 2024 from https://www.aontas.com/assets/resources/Lifelong%20Learning/2019_AONTAS_Summit_programme_WEB.pdf
3. Bélanger, P., & Tuijnman, A. (Eds.). (1997). New patterns of adult learning: A six-country comparative study. Oxford: Elsevier.
4. Belete, S., Duke, C., Hinzen, H., Owusu-Boampong, A., & Phuoc, K. H. (2022). Community learning centres (CLCs) for adult learning and education (ALE): Development in and by communities. International Review of Education, 68(2), 259–290. https://doi.org/10.1007/s11159-022-09954-w
5. Benavot, A., Hinzen, H., Stepanek Lockhart, A., & Hoppers, C. O. (Eds) (2022a). Special issue on Strengthening the future of adult education and lifelong learning for all: Building bridges between CONFINTEA and the SDGs. International Review of Education 68(2) [whole issue]. Retrieved 12 April 2024 from https://link.springer.com/journal/11159/volumes-and-issues/68-2