Ferita, R. A., W. Yanti, dan B. Santika. “Analysis of Students Understanding Mathematics Concept Based on Resolving HOTS Questions at SMP Negeri 1 Gambut”. Math Didactic: Jurnal Pendidikan Matematika, Vol. 8, no. 1, April 2022, hlm. 38-46, doi:10.33654/math.v8i1.1863.