[1]
E. PRATIWI, SUHARJANA, I. P. A. DHARMA HITA, H. P. SARI, and E. ARIESTIKA, “Indonesia’s Badminton National Referees: What is The Level of Self-Confidence and Concentration?”, Innovare J Edu, vol. 10, no. 1, pp. 7–12, Jan. 2022.