?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Maghfiroh(2026)&rft.au=Amalia+Ma%E2%80%99rifatul+Maghfiroh%2C+Maghfiroh(2026)&rft.aulast=Amalia+Ma%E2%80%99rifatul+Maghfiroh&rft.issue=xx&rft.date=1+January+2026&rft.pages=1-9&rft.atitle=Sound+Absorption+Coefficient+From+Composites+Made+From+Coconut+Fiber%2C+Paper+and+Styrofoam&rft.title=JEMMME+(Journal+of+Energy%2C+Mechanical%2C+Material%2C+and+Manufacturing+Engineering)&rft.volume=x&rft.issn=2541-6332&rft.genre=article