?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Annisa&rft.au=Annisa%2C+Fiona+Rachma&rft.aufirst=Fiona+Rachma&rft.pages=116-123&rft.atitle=Reusability+Test+of+Silica-Titania+Catalyst+on+Biodiesel+Production+from+Waste+Cooking+Oil+in+Various+Temperatures&rft.date=10+July+2019&rft.issue=4&rft.issn=Print%3A+2395-6011+dan+Online%3A+2395-602X&rft.title=International+Journal+of+Scientific+Research+and+Technology+(IJSRST)&rft.volume=6&rft.genre=article