Khoerunnisa, H. A. ., U. Aripin, J. Sabandar, and N. F. Hanifah. “Problem-Solving Skills of Seventh-Grade Students in Ratio Topic”. Edumatika : Jurnal Riset Pendidikan Matematika, vol. 6, no. 2, Dec. 2023, pp. 92-104, doi:10.32939/ejrpm.v6i2.3106.