Marji, Mohd Salehudin, et al. “Development of K-Visual GKT Module for Improving Visualization Skill Based on The Art of Origami for Technical Drawing Subjects”. Kognitif: Jurnal Riset HOTS Pendidikan Matematika, vol. 3, no. 2, Dec. 2023, pp. 129-36, doi:10.51574/kognitif.v3i2.1134.