Fadlurreja, R., S. Ridlo, and N. Dewi (Nino Adhi). “Mathematical Reasoning Ability On PACE Learning Model Assisted by Ispring”. Unnes Journal of Mathematics Education Research, Vol. 9, no. 1, June 2020, pp. 100-5, https://journal.unnes.ac.id/sju/ujmer/article/view/32299.