Sittitun, P., and K. Sirichaisin. “Development of a Curriculum for Enhance Executive Function Using Project Approach for Early Childhood of Opportunity Expansion School Lamphun Primary Educational Service Area Office 2”. Academic Journal of Mahamakut Buddhist University Roi Et Campus, vol. 10, no. 2, May 2021, pp. 827-40, https://so01.tci-thaijo.org/index.php/AJMBU/article/view/247724.