[1]
Suprapto, E. et al. 2021. GeoGebra Application Based Tutorial Materials to Improve Spatial Mathematics Abilities in Vocational High Schools. Jurnal Pendidikan Teknologi dan Kejuruan. 27, 2 (Oct. 2021), 175–181. DOI:https://doi.org/10.21831/jptk.v27i2.39099.