- Author: Alexandre P.
- Language: Afrikaans
- Author: Vermeullen J.
- Language: English
- Author: Tavares J.-L.
- Language: Portuguese
- Author: Wilken Pam.
- Language: English
- Author: Bennett P.
- Language: Afrikaans-English
- Author: Philemon Buti Skhosana.
- Language: English
- Author: Mpasi Rogério Goma.
- Language: French, Lingala
- Year: 2011
- Author: Kitching A.L. Blackledge G.R.
- Language: Afrikaans-English