T. Paramasivam and N. Ratnavadivel, “Issues and challenges in managing curriculum change in primary schools: A case study of managing Year Four History Curriculum in the District of Kuala Selangor, Malaysia”, JRPPTTE, vol. 8, no. 1, pp. 18–31, Jun. 2018, doi: 10.37134/jrpptte.vol8.no1.3.2018.