- Author: Mark Allan Powell
- Language: English
- Year: 2018
- Author: Mark Allan Powell
- Language: English
- Year: 2013
- Author: Mark Allan Powell
- Language: Spanish
- Year: 2020
- Author: Mark Allan Powell
- Language: English
- Year: 2002
- Author: Mark Allan Powell
- Language: English
- Author: Mark Allan Powell
- Language: English
- Year: 2018
- Author: Mark Allan Powell
- Language: English
- Year: 2008
- Author: Mark Allan Powell
- Language: English
- Year: 2009
- Author: Mark Allan Powell
- Language: English
- Year: 1998
- Author: Mark Allan Powell
- Language: English