Ιταλική γλώσσα: Διαφορά μεταξύ των αναθεωρήσεων

* {{citation |last=Ashby |first=Patricia |title=Understanding Phonetics |year=2011 |publisher=Routledge |series=Understanding Language series |isbn=978-0340928271 |ref=harvashby2011}}

* {{cite book |title=The Big Book of Italian Verbs: 900 Fully Conjugated Verbs in All Tenses. With IPA Transcription, 2nd Edition |first=Fabrizio |last=Berloco |publisher=Lengu |isbn=978-8894034813 |year=2018 |ref=harvberloco2018 |url=https://books.google.it/books?id=DYynDwAAQBAJ&pg=PA1#v=onepage&q&f=false}}