Development and Validation of a Self-Efficacy Instrument for University Students in Swimming Lessons. - Khory, Fifukha Dwi; Istiyono, Edi; Widihastuti, Widihastuti; Suroto, Suroto; Maksum, Ali; Hartoto, Setiyo; Prakoso, Bayu Budi (International Journal of Sport Studies for Health, 2026)