- Author: Hennie van Greuning.
- Language: English
- Year: 2009
- Author: Hennie Van Greuning Darrel Scott Simonet Terblanche
- Language: English
- Year: 2011
- Author: Hennie Van Greuning Zamir Iqbal
- Language: English
- Author: Hennie Van Greuning
- Language: English
- Year: 2006