- Author: Schultz Bart, Sidgwick Henry
- Language: English
- Year: 2004
- Author: Lazari-Radek Katarzyna de, Sidgwick Henry, Singer Peter
- Language: English
- Year: 2016
- Author: Bart Schultz
- Language: English
- Year: 2017
- Author: Bart Schultz
- Language: English
- Year: 2017
- Author: Schultz Bart
- Language: English
- Year: 2017
- Author: Lazari-Radek Katarzyna de, Singer Peter
- Language: English
- Year: 2016