?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Januar+%2C+Budi+Asmari&rft.aulast=Januar+&rft.aufirst=Budi+Asmari&rft.date=2013&rft.atitle=PEMBELAJARAN+DIRECT+INSTRUCTION+DENGAN+MEDIA+LAGU+TERHADAP+PRESTASI+BELAJAR+MATEMATIKA+DI+SD+SE-KECAMATAN+LAWEYAN&rft.title=Prosiding+Seminar+Nasional+Matematika+dan+Pendidikan+Matematika&rft.issn=978+%E2%80%93+979+%E2%80%93+16353+%E2%80%93+9+%E2%80%93+4&rft.genre=article