- Author: Erik de Haan
- Language: English
- Year: 2017
- Author: Erik De Haan
- Language: English
- Year: 2016
- Author: Erik de Haan, Anthony Kasozi
- Language: English
- Year: 2014
- Author: Erik De Haan
- Language: English
- Year: 2014
- Author: Erik de Haan Dorothee Stoffels
- Language: English
- Year: 2023
- Author: Erik de Haan Willemine Regouin-van Leeuwen
- Language: English
- Year: 2022
- Author: Erik de Haan (auth.)
- Language: English
- Year: 2005
- Author: Erik de Haan Sue Stewart
- Language: English
- Year: 2008
- Author: Erik de Haan Yvonne Burger (auth.)
- Language: English
- Year: 2014
- Author: Erik de Haan Yvonne Burger (auth.)
- Language: English
- Year: 2005