JULIAN, R.; KRISTIYANTO, A.; PURNAMA, S. K. Mental Skill Tennis Referee: Study On Tennis Referee Asian Games And Asian Para Games Indonesia 2018. Journal of Education, Health and Sport, [S. l.], v. 9, n. 4, p. 210–219, 2019. Disponível em: https://apcz.umk.pl/JEHS/article/view/6777. Acesso em: 27 jul. 2024.