Noordyan, Mega, Deddy Sofyan, Iyam Maryati, Teni Sritresna, Dian Mardiani, Basuki Basuki, and Cici Nurulhaq. 2020. “Education in the 21st Century HOTS (Higher Order Thinking Skills) in Mathematical Literacy”. Journal Pekemas 3 (1), 13-17. https://ejournals.institutpendidikan.ac.id/index.php/PEKEMAS/article/view/27.