Bacotang, Juppri, et al. “Content Validity for Early Literacy Skills Indicators from Educator’s Perspective: Kesahan Kandungan Bagi Indikator Kemahiran Literasi Awal Berdasarkan Perspektif Pendidik”. Evaluation Studies in Social Sciences, vol. 1, no. 2, Oct. 2020, pp. 1-8, https://doi.org/10.37134/esss.vol1.2.1.2020.