Priyonggo, H., W. Wardono, and T. Noor Asih. “Mathematics Literacy Skill on Problem Based Learning Assisted by E-Module Agito Based on Learning Motivation”. Unnes Journal of Mathematics Education Research, Vol. 10, no. A, Jan. 2021, pp. 54-58, http://journal.unnes.ac.id/sju/ujmer/article/view/34610.