- Author: Tukufu Zuberi, Amson Sibanda, Eric O. Udjo
- Language: English
- Year: 2005
- Author: Deepa Narayan, Elena Glinskaya
- Language: English
- Year: 2006
- Author: Sophastienphong Kiatchai, Anoma Kulathunga
- Language: English
- Year: 2008
- Author: Markus Haacker, Mariam Claeson
- Language: English
- Year: 2009
- Author: Michael Anderson
- Language: English
- Year: 2015
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- Language: English
- Year: 2015