Sachs, J. (2015). The age of sustainable development. Columbia University Press.
Lua i Stíl Chicago (17ú heag.)Sachs, Jeffrey. The Age of Sustainable Development. New York: Columbia University Press, 2015.
Lua MLA (8ú heag.)Sachs, Jeffrey. The Age of Sustainable Development. Columbia University Press, 2015.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.