Zakkia, A., I. Isnarto, and T. Sri Noor Asih. “Students’ Mathematical Literacy Based on Self-Esteem By Brain Based Learning With Trigo-Fun E-Module”. Unnes Journal of Mathematics Education Research, Vol. 10, no. A, Jan. 2021, pp. 9-14, http://journal.unnes.ac.id/sju/ujmer/article/view/34227.