Purwoko, R.Y. et al. 2023. Development of Open Ended Based Mathematics E-Modules to Enhance Students’ Critical Thinking Ability. Mathline : Jurnal Matematika dan Pendidikan Matematika. 8, 1 (Feb. 2023), 194–206. DOI:https://doi.org/10.31943/mathline.v8i1.337.