Yuliani, Dewi, et al. “Development of a Contextual Student Worksheet on Relations and Functions to Facilitate students’ Mathematical Conceptual Understanding”. Jurnal Absis: Jurnal Pendidikan Matematika Dan Matematika, vol. 7, no. 2, Dec. 2024, pp. 341-9, doi:10.30606/absis.v7i2.2645.