- Author: Philip Frankel
- Language: English
- Year: 2013
- Author: Rica Viljoen Henk van Zyl Joyce Toendepi Stefan Viljoen
- Language: English
- Year: 2019
- Author: BASF Aktiengesellschaft., Becker Britta, Grimm Maren, Krameritsch Jakob
- Language: English
- Year: 2018