Kardiyono, Kardiyono, Soegiyanto Soegiyanto, and Tandiyo Rahayu. “Roller Skating Activities As a Reflection of the Community Life Style in Semarang Municipality”. The Journal of Educational Development 6, no. 2 (March 19, 2018): 265-271. Accessed April 19, 2024. https://journal.unnes.ac.id/sju/jed/article/view/22413.