Leong, T. G., Raja Maamor Shah, R. L. Z., & Mohd Idrus, N. (2020). Analisis Keperluan Bagi Pembangunan Modul Untuk Pengekalan Pengetahuan Konseptual Dan Prosedural Matematik Tingkatan 1: Need Analysis for Form 1 Mathematics Module Development for Retention of Conceptual and Procedural Knowledge. Journal of Science and Mathematics Letters, 8(2), 86–99. https://doi.org/10.37134/jsml.vol8.2.11.2020