- Author: Robert H. Hopcke
- Language: Italian
- Year: 2013
- Author: Robert H. Hopcke
- Language: Portuguese
- Year: 1999
- Author: Robert H. Hopcke
- Language: Portuguese
- Author: Robert H. Hopcke, Paul Schwartz
- Language: English
- Year: 2006
- Author: Robert H. Hopcke
- Language: Portuguese
- Year: 1999