1. Ajzen, I. & Fishbein, M. (1975). Belief, attitude, intention and behaviour: An introduction to theory and research. Reading, MA: Addison-Wesley. 2. Ary, D., Jacob, L. C., & Razaviech, A. (2002). Introduction to research in education. Belmont, California: Wadsworth. 3. Bahagian Pendidikan Guru. (2009). Standard Guru Malaysia. (ms 1–187). Diperoleh daripada https://www.moe.gov.my/images/pemberitahuan/standard%20guru% 4. Bonnett, M. (2013). Sustainable development, environmental education, and the significance of being in place. The Curriculum Journal, 24(2), 250–271. 5. Creswell, J.W., & Clark, V.L.P. (2007). Designing and conducting mixed methods research. California: SAGE Publications Inc. 6. Davis, J. L., Green, J. D., & Reed, A. (2009). Interdependence with the environment: Commitment, interconnectedness, and environmental behavior. Journal of Environmental Psychology, 29, 173-180. 7. Eilam, E., & Trop, T. (2012). Environmental attitudes and environmental behavior-which is the horse and which is the cart? Sustainability, 4, 2210–2246. Diperoleh daripada https://doi.org/10.3390/su4092210 8. Gay, L.R. & Airasian, P. (2003). Education research: competencies for analysis. (7th. ed.). London: Merrill Publishing. 9. Hallinger, P., & Murphy, J. F. (1987). Assesing and developping principal instructional leadership. Educational Leadership, 45(1), 54-61. 10. Hanifah, M., Mohamad Suhaily Yusry, C. N., & Shaharuddin, I. (2013). Kesedaran pendidikan pembangunan lestari menerusi program Sekolah Lestari dalam kalangan pelajar sekolah di Malaysia. Geografi, 1(2), 44–58. Diperoleh daripada https://ejournal.upsi.edu.my/GetFinalFile.ashx?file=3253e07a-fd83-4636-abde-561bac9f5069.pdf 11. Hargreaves, A. & Fink, D. (2007). Energizing leadership for sustainability. Dalam Davies, B. (Ed.), Developing sustainable leadership. London: Paul Chapman Publishing. 12. Hayley, B., Astrid, S., & Sigrid, G. (2015). A teacher education for sustainable development system: An institutional responsibility. International Journal of Higher Education, 4(4), 158–177. 13. Ilisko, D., & Badyanova, Y. (2014). A case study of ESD implementation: Signs of sustainable leadership. Discourse and Communication for Sustainable Education, 5, 38–48. 14. Izani, I., & Yahya, D. (2014). Kepimpinan servant dan pengaruhnya terhadap pengurusan perubahan di sekolah. Jurnal Pendidikan Malaysia, 39(1), 19–26. 15. Jabbar, A. A., & Hussein, A. M. (2017). The role of leadership in strategic management. International Journal of Research - GRANTHAALAYAH, 1(5), 99–106. 16. Kamarul, A. J., Ab Halim, T., & Mohd Izham, M. H. (2010). Sikap pentadbir institut pengajian guru terhadap pelaksanaan pendidikan pembangunan lestari di Malaysia. Jurnal Pendidikan, 2(1), 13–20. 17. Kartini, A. M., & Ahamad, S. Y. (2014). Pengetahuan dan komitmen guru pelatih terhadap Pendidikan Alam Sekitar di IPG Kampus Pendidikan Teknik. Dalam Prosiding Seminar Zon Tengah, IPG Kampus Ipoh. Ipoh. 18. Kementerian Pendidikan Malaysia (KPM). (2016). Falsafah Pendidikan Kebangsaan. Diperoleh daripada http://www.moe.gov.my/index.php/my/dasar/falsafah-pendidikan- kebangsaan. 19. Lance, C. E., Butts, M. M., & Michels, L. C. (2006). The sources of four commonly reported cutoff criteria: What did they really say? Organizational Research Methods, 9(2), 202–220. 20. Law, K. P., & Law, K. K. (2011). Hubungan antara tahap komitmen guru terhadap organisasi dengan gaya kepemimpinan guru besar SRJK (C). Voice of Academia, 6(2), 161–180. 21. Mohammad Zohir, A. (2016). Pendidikan geografi di sekolah-sekolah Malaysia: Perkembangan dan isu. Geografi, 4(1), 1-10. Diperoleh daripada https://ejournal.upsi.edu.my/GetFinalFile.ashx?file=d61985ca-07f2-461d-b395-0902a262c7ba.pdf 22. Mohammad Zohir, A., Hazri, J. & Nordin, A. R. (2012). Exploring the classroom practice of productive pedagogies of the Malaysian secondary school geography teacher. Review of International Geographical Education Online © RIGEO, 2(2), 147-164. 23. Mustamin, & Yasin, M. A. (2012). The competence of school principals: What kind of need competence for school success? Journal of Education and Learning, 6(1), 33-42. 24. Norshariani, A.R. (2009). Kajian tingkah laku terhadap amalan penjagaan alam sekitar dalam kalangan pelajar (Tesis Sarjana). Fakulti Pendidikan, Universiti Kebangsaan Malaysia. 25. Pavlova, M. (2013). Teaching and learning for sustainable development: ESD research in technology education. International Journal of Technology and Design Education, 23, 733–748. 26. Roya, K., & Maimunah, I. (2012). Achievement motivation in the leadership role of extension agents. United Kingdom: Cambridge Scholars. 27. Tan, C. I., Ewe, M. K. & Abdul Razak, O. (2013). Promoting environmental education in Malaysian preschools. International Journal of Early Childhood Education and Care, 3(1), 12-23. 28. World Wildlife Fund (WWF) Malaysia. (2012). Eco-IPG Sustainability through education. Diperoleh daripada http://www.cornerstone.com.my/eco-institutes/ index.cfm? & menuid=3