Casinillo, Leomarich, and Jonecis Dayap. “Income and Happiness in Teaching: Understanding teachers’ Well-Being Using Regression Model and K-Means Clustering”. Journal of Research, Policy & Practice of Teachers and Teacher Education 13, no. 2 (December 30, 2023): 131–141. Accessed November 27, 2024. https://ojs.upsi.edu.my/index.php/JRPPTTE/article/view/8229.