Parsaiezadeh, Mmohamad, et al. “Exploring the Predictive Relationship Between Mental Toughness and Subjective Well-Being: A Quantitative Analysis”. Journal of Personality and Psychosomatic Research (JPPR), vol. 2, no. 1, Jan. 2024, pp. 29-35, https://doi.org/10.61838/kman.jppr.2.1.6.