Noordyan, Mega, Deddy Sofyan, Iyam Maryati, Teni Sritresna, Dian Mardiani, Basuki Basuki, and Cici Nurulhaq. “Education in the 21st Century HOTS (Higher Order Thinking Skills) in Mathematical Literacy”. Journal Pekemas 3, no. 1 (March 7, 2020): 13-17. Accessed October 16, 2021. https://ejournals.institutpendidikan.ac.id/index.php/PEKEMAS/article/view/27.