?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&rft.aufirst=Yusnidar&rft.au=Yusuf%2C+Yusnidar&rft.aulast=Yusuf&rft.date=2+January+2020&rft.isbn=9786025282379&rft.btitle=Desain+Pembelajaran+IPA+SD&rft.genre=book