Edwards, M., & Hulme, D. (1992). Making a difference: NGOs and development in a changing world. Earthscan.
Lua i Stíl Chicago (17ú heag.)Edwards, Michael, agus David Hulme. Making a Difference: NGOs and Development in a Changing World. London: Earthscan, 1992.
Lua MLA (9ú heag.)Edwards, Michael, agus David Hulme. Making a Difference: NGOs and Development in a Changing World. Earthscan, 1992.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.