Chu, H. E., Lee, E. A., Ko, H. R., Shin, D. H., Lee, M. N., Min, B. M., & Kang, K. H. (2007). Korean Year 3 Children’s Environmental Literacy: A Prerequisite for a Korean Environmental Education Curriculum. International Journal of Science Education, 29, 731-746.
 Connell, S. (1997). Empirical-Analytical Methodological Research in Environmental Education: Response to a Negative Trend in Methodological and Ideological Discussions. Environmental Education Research, 3, 117-132.
 Dourish, P. (2008). Points of Persuasion: Strategic Essentialism and Environmental Sustainability. Donald Bren School of Information and Computer Sciences University of California, Irvine.
 Fien, J. (2000). Education for the Environment: A Critique—An Analysis. Environmental Education Research, 6, 179-192.
 Fien, J. (1999). Towards a Map of Commitment: A Socially Critical Approach to Geographical Education. International Research in Geographical and Environmental Education, 8, 140-158. http://dx.doi.org/10.1080/10382049908667602
 Government of the Republic of Namibia (1992). NAMIBIA’S GREEN PLAN, (Environment and Development) Namibia’s Green Plan to Secure Present and Future Generations of a Safe and Healthy Environment and a Prosperous Economy. Windhoek: Ministry of Wildlife, Conservation and Tourism.
 Hart, P. (2003). Reflections on Reviewing Educational Research: (Re)searching for Value in Environmental Education. Environmental Education Research, 9, 241-256.
 James, A. A., Milenkiewicz, M. T., & Buckman, A. (2008). Participatory Research for Educational Leadership. Using Data-Driven Decision Making to Improve Schools. London: SAGE Publications. http://dx.doi.org/10.4135/9781483329369
 Kindon, S., Pain, R., & Kesby, M. (2009). Participatory Action Research. Origins, Approaches and Methods. In S. Kindon, R. Pain, & M. Kesby (Eds.), Participatory Action Research Approaches and Methods. Connecting People, Participation and Place (pp. 9-19). London: Routledge.
 Kristensen, J. O. (1999). An Evaluation of the Life Science Curriculum in Namibia and Its Development through Stakeholders’ Perceptions of Learner-Centred Education. Unpublished Med. Thesis, Rhodes: Rhodes University.
 Le Grange, L. (2004). Embodiment, Social Praxis and Environmental Education: Some Thoughts. Environmental Education Research, 10, 387-399.
 Marcinkowski, T. (2001). Predictors of Responsible Environmental Behavior: A Review of Three Dissertation Studies. In H. Hungerford (Ed.), Essential Readings in Environmental Education. Champaign, IL: Stipes Publishing.
 McKeown, R., & Hopkins, C. (2005). EE and ESD: Two Paradigms, One Crucial Goal. Applied Environmental Education and Communication, 4, 221-224.
 Ministry of Environment and Tourism (n.d.). Some Basic Lesson Learnt and Hands on Guidelines for Implementation and Application, National Capacity Self-Assessment (NCSA) for Global Environmental Management. Windhoek: Ministry of Environment and Tourism.
 Namibia National Commission for UNESCO (NATCOM) (2008). Outputs of the First National Consultative Seminar on Education for Sustainable Development in Namibia. In Proceedings of the Workshop Report (pp. 1-25). Windhoek: NATCOM.
 Pennuel, W. R., & Freeman, T. (1997). Participatory Action Research in Youth Programming: A Theory in Use. Child and Youth Care Forum, 26, 175-185.
 Schurink, W., Fouché, C. B., & de Vos, A. S. (2011). Qualitative Data Analysis and Interpretations. In: A. S. de Vos, H. Strydom, C. B. Fouché, & C. S. L. Delport (Eds.), Research at Grassroots. To the Social Scnces and Human Service Professions (pp. 397-423). 4th Edition, Pretoria: Van Schaik Publishers.
 Stevenson, R. B. (2007). Schooling and Environmental Education: Contradiction in Purpose and Practice. Environmental Education Research, 13, 139-153.
 Tilbury, D. (1995). Sustainability Environmental Education for Sustainability: Defining the New Focus of Environmental Education in the 1990s. Environmental Education Research, 1, 195-212.
 Walter, P. (2009). Philosophies of Adult Environmental Education. Adult Education Quarterly, 60, 3-25.