Harimurti, Rina, Ekohariadi Ekohariadi, Munoto Munoto, I Gusti Putu Asto B, and Elizabeth Titiek Winanti. 2019. “Analysis of Programming Skills Concept in Developing Problem Solving Skills”. Jurnal Pendidikan Teknologi Dan Kejuruan 25 (1):43-51. https://doi.org/10.21831/jptk.v25i1.22638.