Korten, D. C. (1990). Getting to the 21st century: Voluntary action and the global agenda. Kumarian Press, Oxford & IBH Publishing.
Lua i Stíl Chicago (17ú heag.)Korten, David C. Getting to the 21st Century: Voluntary Action and the Global Agenda. West Hartford, Conn. : New Delhi: Kumarian Press, Oxford & IBH Publishing, 1990.
Lua MLA (8ú heag.)Korten, David C. Getting to the 21st Century: Voluntary Action and the Global Agenda. Kumarian Press, Oxford & IBH Publishing, 1990.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.