Pravesti, C.A., Mufidah, E.F., Nurlitasani, E.N. and Utari, E.D.P. 2023. Development of Self-efficacy Scale for 21st-Century Guidance and Counseling Teachers . Nusantara of Research : Jurnal Hasil-hasil Penelitian Universitas Nusantara PGRI Kediri. 10, 4 (Dec. 2023), 407–415. DOI:https://doi.org/10.29407/nor.v10i4.21309.