- Author: Professor Janet McLean
- Language: English
- Year: 2012
- Author: Umberto Cerroni
- Language: Spanish
- Year: 1967
- Author: Perry Mars
- Language: English
- Year: 1998
- Author: Raymond Lotta
- Language: English
- Year: 1978
- Author: Michael Hudson
- Language: English
- Year: 1985
- Author: Juan Hdez. Vigueras
- Language: Spanish
- Year: 2010
- Author: Joseph La Palombara Myron Weiner
- Language: English
- Year: 1969
- Author: Fernando Collor
- Language: Portuguese
- Year: 2013