PERIASAMY, E. Incorrect Thinking Process Prediction for Negative Numbers Subtraction Operation Involving Positive with Negative Integers. Jurnal Personalia Pelajar, [S. l.], n. 17, 2015. Disponível em: https://spaj.ukm.my/personalia/index.php/personalia/article/view/60. Acesso em: 18 may. 2024.