“Self Efficacy Siswa Yang Mengikuti Ekstrakurikuler Bola Voli Di Smk Negeri 1 Kota Bengkulu: Self Efficacy of Students Participating in Extracurricular Activities volley ball at SMK Negeri 1 Bengkulu City” (2023) SPORT GYMNASTICS : Jurnal Ilmiah Pendidikan Jasmani, 4(2), pp. 289–298. doi: 10.33369/gymnastics.v4i2.29402.