Uripno, Gusti, Tatag Yuli Eko Siswono, Endah Budi Rahaju, and Arief Budi Wicaksono. 2023. “Students’ Combinatorial Thinking Error in Solving Combinatorial Problem”. Indonesian Journal of Mathematics Education 6 (1):16-22. https://doi.org/10.31002/ijome.v6i1.589.