- Author: The World Bank
- Language: English
- Year: 2013
- Author: The World Bank
- Language: English
- Year: 2010
- Author: World Bank
- Language: English
- Year: 2014
- Author: Heather Dittbrenner, World Bank
- Language: English
- Year: 2013
- Author: World Bank
- Language: English
- Year: 2012
- Author: Asita Ruan De Silva
- Language: English
- Year: 2005