?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adissertation&rft.au=71170136%2C+Nicholas+Christianto+Wijaya&rft.aulast=71170136&rft.aufirst=Nicholas+Christianto+Wijaya&rft.title=PENGEMBANGAN+PROTOTYPE+APLIKASI+UNTUK+LANJUT+USIA+DENGAN+METODE+USER+CENTERED+DESIGN&rft.degree=Bachelor&rft.inst=Universitas+Kristen+Duta+Wacana&rft.date=November+2021