Tajudin, Azalida, and Norazilawati Abdullah. “Kesediaan Guru Sains Sekolah Rendah Terhadap Pelaksanaan Pembelajaran Abad Ke-21: Science Teachers’ Readiness in Implementing the 21st Century Learning”. Jurnal Pendidikan Sains Dan Matematik Malaysia, vol. 8, no. 1, June 2018, pp. 82-97, https://doi.org/10.37134/jpsmm.vol8.1.7.2018.