Khuleesap, Prissana, Benchaporn Wannupatam, and Bunsanoe Triwiset. 2025. “The Outcomes of Learning Management on Economics Using the CO-5 STEPs Learning Process Integrated with Gamification Techniques for Matthayomsueksa 2 Students: The Outcomes of Learning Management on Economics Using the CO-5 STEPs Learning Process Integrated with Gamification Techniques for Matthayomsueksa 2 Students”. RATANABUTH JOURNAL 7 (3). Yasothon, Thailand:69-82. https://so07.tci-thaijo.org/index.php/rtnb/article/view/8951.