Soetjipto, Helly Prajitno, et al. “Assessment of the Psychometric Properties of the Indonesian Version of the General Self-Efficacy Scale-12 (GSES-12) in a Sample of Indonesian High School Students”. Psikohumaniora: Jurnal Penelitian Psikologi, vol. 8, no. 2, Nov. 2023, pp. 259-74, doi:10.21580/pjpp.v8i2.18024.