?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Faridatul+Istighfaroh&rft.aufirst=Istighfaroh+(2026)&rft.au=Faridatul+Istighfaroh%2C+Istighfaroh+(2026)&rft.issn=-&rft.issue=2&rft.volume=7&rft.pages=255-264&rft.title=Jurnal+Pendidikan+Bahasa+Inggris+Proficiency&rft.atitle=Gamified+English+Learning%3A+Evaluating+Duolingo+Mobile+Apps+Impact+On+Det+Performance+Among+Indonesian+College+Students&rft.genre=article