
- Author: Jack Calder, Katherine Baer, Jack Calder
- Language: English
- Year: 2014

- Author: World Bank Group
- Language: English
- Year: 2010

- Author: Camilla E. Watson
- Language: English
- Year: 2011

- Author: Ifueko Omoigui Okauru
- Language: English
- Year: 2012

- Author: Alston Philip, Reisch Nikki
- Language: English
- Year: 2019

- Author: Devitt Michael R., Sannicandro Lawrence A
- Language: English
- Year: 2017