Sutawijaya, Lalu Danang, Sugiyanto Sugiyanto, and Slamet Riyadi. “Sports Activities at the Fitness Center While Pandemy COVID-19 in the City of Mataram”. Quality in Sport 6, no. 3 (June 22, 2020): 20–27. Accessed July 18, 2024. https://apcz.umk.pl/QS/article/view/QS.2020.016.