Setiyo et al. 2024. The Effect of On The Job Training on Problem Solving Skills and Self Efficacy of Aviation Polytechnic Cadets. Langit Biru: Jurnal Ilmiah Aviasi. 17, 01 (Feb. 2024), 1–10. DOI:https://doi.org/10.54147/langitbiru.v17i01.932.