Soemardiawan, Soemardiawan, and Uray Gustian. 2026. “The Effectiveness of a Football-Based Psychological Skills Training Program on Adolescents in the Indonesian–Malaysian Border Area: An Experimental Study in Entikong”. Indonesian Journal of Physical Education and Sport Science 6 (2):222-35. https://doi.org/10.52188/ijpess.v6i2.1964.