Friskawati, Gita Febria, Sri Widaningsih, and Rizki Illahi. 2019. “Observing student’s Situational Interest Based on the Implementation of Reward and Punishment in Physical Education”. Jurnal SPORTIF : Jurnal Penelitian Pembelajaran 5 (2), 198-214. https://doi.org/10.29407/js_unpgri.v5i2.12933.