Musa, R. T., Abd Karim, N. S., Adenan, N. H., Tarmizi, R. A., Md Junus, N. W. and Anak Kelong, V. E. (2021) “Tahap kesediaan Guru Pelatih Matematik UPSI dalam melaksanakan PAK21: The level of readiness on the implementation of PAK21 among pre-services Mathematics teachers at UPSI”, Jurnal Pendidikan Bitara UPSI, 14, pp. 82–91. doi: 10.37134/bitara.vol14.sp.9.2021.