H. Mahat, M. S. Y. Che Ngah, and N. I. Ahmad, “Kajian Tahap Amalan Kelestarian dalam Kalangan Murid Prasekolah Kementerian Pendidikan Malaysia Daerah Hulu Langat, Selangor: A Study on the Level of Sustainability Practices among Ministry of Education Preschool Pupils in Hulu Langat, Selangor”, GEOG, vol. 3, no. 1, pp. 25–34, Apr. 2015, Accessed: Dec. 06, 2025. [Online]. Available: https://ejournal.upsi.edu.my/index.php/GEOG/article/view/1845