?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Soebagyo%2C+Joko&rft.aufirst=Joko&rft.aulast=Soebagyo&rft.title=Proceedings+of+the+1st+Annual+International+Conference+on+Natural+and+Social+Science+Education+(ICNSSE+2020)&rft.issn=2352-5398&rft.atitle=Polya's+Four+Phases+Exploration+in+Solving+Linear+Program+Story+Questions+Based+on+Student+Beliefs&rft.genre=article