WALKER, SP. Mindfulness and burnout among competitive adolescent tennis players. South African Journal of Sports Medicine, [S. l.], v. 25, n. 4, p. 105–108, 2013. DOI: 10.7196/SAJSM.498. Disponível em: https://journals.assaf.org.za/index.php/sajsm/article/view/344. Acesso em: 3 may. 2024.