1. Bebbington, A., Hickey, S., & Mitlin, D. (2008). Chapter 1: ‘Introduction: Can NGOs make a difference?: The challenge of development alternatives’. In A. Bebbington, S. Hickey, & D. Mitlin (Eds.), Can NGOs make a difference?: The challenge of development alternatives (pp. 3–37). London: Zed Books.
2. CAF. (2015). World giving index. https://www.cafonline.org/about-us/publications/2015-publications/caf-world-giving-index-2015
3. Carroll, T. F. (1992). Intermediary NGOs: The supporting link in grassroots development. Hartford: Kumarian.
4. Cernea, M. M. (1988). Non-governmental organizations and local development, World Bank discussion papers. Washington, DC: World Bank.
5. Charnovitz, S. (1997). Two centuries of participation: NGOs and international governance. Michigan Journal of International Law, 18(2), 183–286.