Maharani, Putri Maulidina, Hadi Sartono, Widi Kusumah, and Mulyana Mulyana. 2024. “Self-Talk As a Regulatory Self-Confidence: A Descriptive Study of Athlete Long Jump”. Indonesian Journal of Sport Management 4 (4). https://doi.org/10.31949/ijsm.v4i4.11563.