Anell, L. (1980). The developing countries & the world eco order. St Martins Press.
Lua i Stíl Chicago (17ú heag.)Anell, Lavs. The Developing Countries & the World Eco Order. New York: St Martins Press, 1980.
Lua MLA (9ú heag.)Anell, Lavs. The Developing Countries & the World Eco Order. St Martins Press, 1980.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.