- Author: Leonardo Benevolo
- Language: English
- Year: 1978
- Author: Leonardo Benevolo
- Language: Italian
- Year: 1991
- Author: Leonardo Benevolo
- Language: Spanish
- Year: 1993
- Author: Leonardo Benevolo
- Language: Turkish
- Year: 1995
- Author: Leonardo Benevolo
- Language: Italian
- Year: 2012
- Author: Leonardo Benevolo
- Language: Italian
- Year: 2011
- Author: Leonardo Benevolo
- Language: ENGLISH
- Year: 1977
- Author: Leonardo Benevolo
- Language: ENGLISH
- Year: 1980
- Author: Leonardo Benevolo
- Language: ENGLISH
- Year: 1967
- Author: Leonardo Benevolo
- Language: Portuguese