Tanjung, Ayu Luviyanti, Zulkardi Zulkardi, and Ratu Ilma Indra Putri. “The Development of PISA-Like Problems Using Immunity Context During Pandemic”. Jurnal Elemen 9, no. 1 (January 2, 2023): 31–48. Accessed October 5, 2024. https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/6152.