L. Cia, Richard, and Maria Salih. “Problem Solving Confidence and Attitudes in Mathematics of Grade Six Pupils of Sawata Ernandcor Central Elementary School”. Jurnal Pendidikan Sains dan Matematik Malaysia 5, no. 1 (May 4, 2015): 35–43. Accessed May 4, 2024. https://ejournal.upsi.edu.my/index.php/JPSMM/article/view/2141.