SHIDDIQ, Ahmad Nizamuddin, KRISTIYANTO, Agus and DOEWES, Muchsin. Freeletics As Sports Activities Community Recreation (Phenomenological study of community groups that carry out recreational sports in the city of Yogyakarta). Journal of Education, Health and Sport. Online. 23 April 2019. Vol. 9, no. 4, pp. 468-474. [Accessed 26 December 2024].