Hamidi, Hadi, et al. “Investigating the Effectiveness of Choice Theory Training on Time Perspective and Psychological Capital (Resilience, Self-Efficacy, Hope, and Optimism) in Male High School Students in South Khorasan Province”. International Journal of Education and Cognitive Sciences, Feb. 2025, pp. 1-9, https://www.journalecs.com/index.php/ecs/article/view/223.