FIRDAUS, K. .-. THE EFFECT OF FARTLEX AND EXTENSIVE INTERVAL TRAINING METHOD TOWARD THE FOOTBALL REFEREES SPEED ENDURANCE IN PADANG. JOURNAL OF SOCIAL SCIENCE RESEARCH, [S. l.], v. 9, n. 1, p. 1759–1764, 2015. DOI: 10.24297/jssr.v9i1.3773. Disponível em: https://rajpub.com/index.php/jssr/article/view/3773. Acesso em: 23 nov. 2024.