Pebrianti A, Prabawanto S, Nurlaelah E. How do students solve reversible thinking problems in mathematics?. J. Elemen [Internet]. 2023 Jul. 31 [cited 2024 Jul. 3];9(2):630-43. Available from: https://e-journal.hamzanwadi.ac.id/index.php/jel/article/view/17821