P. Khuleesap, B. Wannupatam, and B. Triwiset, “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”, rtnb, vol. 7, no. 3, pp. 69–82, Dec. 2025.