- Author: United States. Congress. Senate., Obama Barack, United States. Congress. Senate, Obama Barack, Wolffe Richard
- Language: English
- Year: 2009
- Author: Obama Barack, Wolffe Richard
- Language: English
- Year: 2011
- Author: Obama Barack, Wolffe Richard
- Language: English
- Year: 2009
- Author: Andrés José, Wolffe Richard
- Language: English
- Year: 2012
- Author: Andres Jose, Wolffe Richard
- Language: English
- Year: 2012
- Author: Andres Jose, Wolffe Richard
- Language: English
- Year: 2012