?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=nn%2C+Fitra+Fatmawati&rft.aulast=nn&rft.aufirst=Fitra+Fatmawati&rft.date=20+Desember+2012&rft.atitle=SOY+BEAN+MEAL+REPLACEMENT+WITH+VELVET+BEAN+MEAL+IN+DIET+FOR+TILAPIA+(Oreochromis+niloticus)&rft.title=digital+library&rft.genre=article