?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Idris&rft.aulast=Idris&rft.au=Idris%2C+Idris&rft.atitle=Internalization+Of+The+External+Costs+To+Reach+The+Rates+Of+Output+That+Are+Socially+Efficient&rft.date=April+2012&rft.issn=1412-3290&rft.title=JURNAL+ECONOMAC+%3A+Jurnal+Ilmiah+Ekonomi%2C+Manajemen+dan+Akuntansi&rft.volume=12&rft.issue=1&rft.pages=1-8&rft.genre=article