Hidayat, N., Hadi, S., Basith, A., & Suwandi, S. (2018). Developing E-Learning Media with the Contiguity Principle for the Subject of Autocad. Jurnal Pendidikan Teknologi Dan Kejuruan, 24(1), 72–82. https://doi.org/10.21831/jptk.v24i1.17796