Pramono, M. H., B. Ismanto, and S. T. Satyawati. “SPIES Training Model to Improve Teacher’s Competence in 21st Century Learning”. Jurnal Penelitian Dan Pengembangan Pendidikan, vol. 7, no. 2, June 2023, pp. 203-12, doi:10.23887/jppp.v7i2.61824.