1. Andreotti, V. (2006). Soft versus critical global citizenship education. Policy and Practice: A Development Education Review, 3, 40–51.
2. Andreotti, V., & Dowling, E. (2004). WSF, ethics and pedagogy. International Science Journal, 56(4), 605–613.
3. Appiah, K. A. (2018). The lies that bind: Rethinking identity. Profile Books.
4. Ballantyne, R., & Packer, J. (2008). Learning for sustainability: The role and impact of outdoor and environmental education centre. A Joint Initiative of The University of Queensland and Education Queensland. Retrieved May 5, 2019, from https://www.researchgate.net/publication/43521827_Learning_for_sustainability_The_role_and_impact_of_outdoor_and_environmental_education_centres
5. Barad, K. (2007). Meeting the universe halfway. Duke University Press.