* {{cite book|last=Berloco |first=Fabrizio |year=2018 |title=The Big Book of Italian Verbs: 900 Fully Conjugated Verbs in All Tenses. With IPA Transcription, 2nd Edition |publisher=Lengu |ISBN=978-8894034813 |url=https://books.google.es/books?id=DYynDwAAQBAJ&pg=PA3#v=onepage&q&f=false |ref=berloco2018}}