?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.aufirst=Wahyu+Hadi&rft.au=72130028%2C+Wahyu+Hadi&rft.aulast=72130028&rft.tpages=86&rft.title=PENGUJIAN+USABILITY+APLIKASI+WEB+PERANGKAT+BERGERAK+PASAR+TRADISIONAL+PADA+LANSIA+DI+YOGYAKARTA&rft.degree=Bachelor&rft.inst=Universitas+Kristen+Duta+Wacana&rft.date=February+2017