- Author: Spencer Di Scala, Alan Sharp
- Language: English
- Year: 2010
- Author: Giovanni Gentile A. James Gregor
- Language: English
- Year: 2017
- Author: Salvatore Garau
- Language: English
- Year: 2015
- Author: Patricia Gaborik
- Language: English
- Year: 2021
- Author: Simonetta Falasca-Zamponi
- Language: English
- Year: 2019
- Author: Gian Giacomo Migone Molly Tambor [Translator]
- Language: English
- Year: 2015
- Author: Palmiro Togliatti
- Language: English
- Year: 1976
- Author: Stephen Gundle
- Language: English
- Year: 2016
- Author: Christopher Duggan
- Language: English
- Year: 2013