Nusantara, D. S., Zulkardi, and R. I. I. Putri. “Designing PISA-Like Mathematics Task Using a Covid-19 Context (PISACOMAT)”. Journal on Mathematics Education, vol. 12, no. 2, May 2021, pp. 349-64, https://jme.ejournal.unsri.ac.id/index.php/jme/article/view/3727.