Ellappan, Mani Rajan, et al. “Pelaksanaan Pendidikan Pembangunan Lestari Dalam Konteks Sikap Pentadbir Di Institut Pendidikan Guru Malaysia: Implementation of Sustainable Development Education in Attitude Context Among Administrators of Malaysian Teacher Education Institute (IPGM)”.
GEOGRAFI, vol. 6, no. 1, Apr. 2018, pp. 50-60,
https://ejournal.upsi.edu.my/index.php/GEOG/article/view/2079.