MASUM, Rubina. A Mixed Method Analysis of Mental Toughness in Elite and Sub-elite Male and Female Tennis Players in Pakistan. Advances in Social Sciences Research Journal, [S. l.], v. 1, n. 6, p. 110–122, 2014. DOI: 10.14738/assrj.16.555. Disponível em: https://scholarpublishing.org/journals/index.php/ASSRJ/article/view/4019. Acesso em: 10 jun. 2026.