Junianto, J., A. Fonda, M. W. Firdaus, and K. A. Ramadhan. “Enhancing Students’ Mathematical Literacy Skills through Contextual Teaching and Learning (CTL) and Problem Based Learning (PBL) Approaches”. Jurnal Pendidikan Matematika Universitas Lampung, vol. 13, no. 3, Sept. 2025, pp. 172-8, doi:10.23960/mtk/v13i3.pp172-182.