Adelita, F., A. Rinaldi, and F. G. Putra. “The Effect of Hypnoteaching Learning Method on Students’ Problem-Solving Skills and Concept Understanding”. Numerical: Jurnal Matematika Dan Pendidikan Matematika, vol. 5, no. 1, June 2021, pp. 49-56, doi:10.25217/numerical.v5i1.1391.