Rogers, Alan (3 September 2019). "Second-generation non-formal education and the sustainable development goals: operationalising the SDGs through community learning centres". International Journal of Lifelong Education. 38 (5): 515–526. doi:10.1080/02601370.2019.1636893. ISSN0260-1370. S2CID199154922.
[McGivney, V. (1999) Informal learning in the community: a trigger for change and development (Leicester: NIACE). Cited in 'Helen Colley, Phil Hodkinson & Janice Malcolm (2002) Non-formal learning: mapping the conceptual terrain. A Consultation Report, Leeds: University of Leeds Lifelong Learning Institute. Also available in the informal education archives: http://www.infed.org/archives/e-texts/colley_informal_learning.htm]
[ Feutrie M. (2007), Validation of Non-formal and Informal Learning in Europe: Comparative Approaches, Challenges and Possibilities, communication at the conference on .Recognition of Prior Learning: Nordic-Baltic Experiences and European Perspectives., Copenhagen, 8 March 07 http://www.nordvux.net/page/489/keynotesandpresentations.htmArchived 13 March 2012 at the Wayback Machine]
Rogers, Alan (3 September 2019). "Second-generation non-formal education and the sustainable development goals: operationalising the SDGs through community learning centres". International Journal of Lifelong Education. 38 (5): 515–526. doi:10.1080/02601370.2019.1636893. ISSN0260-1370. S2CID199154922.
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papers.ssrn.com
Willems, Jurgen; Andersson, Fredrik O. (22 September 2022). "Learning New Learning: Maturing the Public Governance of Non-formal Education". SSRN4227081.
[ Feutrie M. (2007), Validation of Non-formal and Informal Learning in Europe: Comparative Approaches, Challenges and Possibilities, communication at the conference on .Recognition of Prior Learning: Nordic-Baltic Experiences and European Perspectives., Copenhagen, 8 March 07 http://www.nordvux.net/page/489/keynotesandpresentations.htmArchived 13 March 2012 at the Wayback Machine]
Rogers, Alan (3 September 2019). "Second-generation non-formal education and the sustainable development goals: operationalising the SDGs through community learning centres". International Journal of Lifelong Education. 38 (5): 515–526. doi:10.1080/02601370.2019.1636893. ISSN0260-1370. S2CID199154922.