?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aulast=Hartanto&rft.au=Hartanto%2C+Suryo&rft.aufirst=Suryo&rft.title=Need+and+Analysis+of+Soft+Skills+for+Students+of+The+Mechanical+Engineering+Department+of+Vocational+High+School&rft.date=October+2015&rft.genre=proceeding