?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aulast=Marselis&rft.au=Marselis%2C+Marselis&rft.aufirst=Marselis&rft.title=Pengembangan+Modul+dan+Trainer+Programmable+Logic+Controller+(PLC)+di+SMK+Negeri+1+Sumatera+Barat.&rft.degree=Masters%2FTesis&rft.inst=Universitas+Negeri+Padang&rft.date=2017