Rufino M. Lorejo, Leirra Lynn S. Labastilla, and Joecy M. Menguito. “Acceptability of the Game SpinGebra for Mastering Fundamental Operations on Algebraic Expressions in One Variable”. Utilitas Mathematica, vol. 122, no. 2, Nov. 2025, pp. 2560-7, https://utilitasmathematica.com/index.php/Index/article/view/3014.