Currently Being ModeratedAug 21, 2013 10:31 AM (in response to Patri.la)
iBooks Author doesn't produce .epub format. Instead it is designed to create multi-touch books in a special .ibooks format. If you want certain .epub features, you probably need to use a different app. Apple's app is Pages.
I don't know whether a 3rd party has published a manual in Italian. Apple's instructions are at