Jamil, Norly, and Munirah Ghazali. “A Systematic Review of the Contribution of Spontaneous Focusing on Numerosity to Enhance children’s Mathematical Development”. Jurnal Pendidikan Awal Kanak-Kanak Kebangsaan, vol. 10, no. 1, Jan. 2021, pp. 16-24, https://doi.org/10.37134/jpak.vol10.1.2.2021.