?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Irfan+Ananda&rft.aulast=Ismail&rft.au=Ismail%2C+Irfan+Ananda&rft.atitle=Flipped+Classroom+Learning+System+Guided+Inquiry+On+Thermochemical+Materials+For+High+School+Students+Class+XI&rft.date=December+2021&rft.issn=2509-0119&rft.title=International+Journal+of+Progressive+Sciences+and+Technologies+(IJPSAT)&rft.volume=30&rft.issue=1&rft.pages=280-287&rft.genre=article