- Author: Richard Towell, Roger Hawkins
- Language: English
- Year: 1994
- Author: Roger Hawkins, Marie-Noelle Lamy, Richard Towell
- Language: English
- Year: 2015
- Author: Roger Hawkins Richard Towell
- Language: English
- Year: 2015
- Author: Roger Hawkins
- Language: English
- Year: 2015
- Author: Roger Hawkins Richard Towell Marie-Noëlle Lamy
- Language: French
- Year: 2015
- Author: Roger Hawkins Richard Towell Marie-Noëlle Lamy
- Language: French
- Year: 2010
- Author: María del Pilar García Mayo Roger Hawkins
- Language: English
- Year: 2009
- Author: Rixhard Towell and Roger Hawkins
- Language: English
- Year: 1994
- Author: Richard Towell Roger Hawkins
- Language: English
- Year: 1994
- Author: Roger Hawkins Richard Towell
- Language: English
- Year: 2001