KHORY, Fifukha Dwi; ISTIYONO, Edi; WIDIHASTUTI, Widihastuti; SUROTO, Suroto; MAKSUM, Ali; HARTOTO, Setiyo; PRAKOSO, Bayu Budi. Development and validation of a self-efficacy instrument for university students in swimming lesson. International Journal of Sport Studies for Health, [S. l.], v. 9, n. 2, p. 1–13, 2026. DOI: 10.61838/kman.intjssh.4823. Disponível em: https://www.journals.kmanpub.com/index.php/Intjssh/article/view/4823. Acesso em: 26 july. 2026.