- Author: Piero Ferrucci
- Language: English
- Author: Piero Ferrucci
- Language: English
- Author: Piero Colli Franzone
- Language: English
- Author: Claudio Bartocci, Piero Martin, Andrea Tagliapietra
- Language: Italian
- Year: 2016
- Author: Piero Ignazi, Paola Bordandini
- Language: Italian
- Year: 2018
- Author: Piero Pozzati Claudio Ceccoli
- Language: Italian
- Year: 1986
- Author: Piero Pozzati
- Language: Italian
- Year: 1977
- Author: Harald Bodenschatz, Piero Sassi, Max Prof. Dr. Welch Guerra
- Language: English
- Year: 2015
- Author: Angelo Piero Sereni
- Language: English
- Year: 2019
- Author: W. S. Di Piero
- Language: English
- Year: 2020