م. زياد قاسم يحيى م. زياد قاسم يحيى. “Perceived Self-Efficacy As a Predictive Variable for Achievement Motivation Among 100-Meter Runners”. Wasit Journal of Sports Sciences, vol. 28, no. 2, June 2026, pp. 287-02, https://doi.org/10.31185/wjoss.1185.