A bunch of possibilities:
Starting Out: Open Games by GM Glenn Flear (2010)
https://web.archive.org/web/20140626232452/http://www.chesscafe.com/text/hansen134.pdf
Bologan's Black Weapons in the Open Games (2014)
http://www.jeremysilman.com/shop/pc/Bologans-Black-Weapons-in-the-Open-Games-76p3873.htm
The Kaufman Repertoire for Black & White by Larry Kaufman (2012)
https://web.archive.org/web/20140626221508/http://www.chesscafe.com/text/hansen162.pdf
https://www.newinchess.com/media/wysiwyg/product_pdf/955.pdf
Opening Repertoire: The Open Games with Black by Martin Lokander (2015)
https://www.newinchess.com/media/wysiwyg/product_pdf/7546.pdf
Playing 1.e4 e5 - A Classical Repertoire by Nikolaos Ntirlis (2016)
https://www.newinchess.com/media/wysiwyg/product_pdf/7572.pdf
http://www.qualitychess.co.uk/ebooks/Playing1e4e5-excerpt.pdf
When someone plays the Italian Game they often try to attack f4 with their knight to do the Fried Liver attack forking your Queen and your Rook. When you see that, DON'T worry quickly take out your knight to support d5 and then play d5. This posses a threat on the "Italian bishop" and as far as I know it's the best counter attack. You might also like something as simple as h6, but I wouldn't play that.