Korten, D. C. (1990). Getting to the 21st century: Voluntary action and the global agenda. Kumarian Press, Oxford & IBH Publishing.
Dyfyniad Arddull ChicagoKorten, David C. Getting to the 21st Century: Voluntary Action and the Global Agenda. West Hartford, Conn. : New Delhi: Kumarian Press, Oxford & IBH Publishing, 1990.
Dyfyniad MLAKorten, David C. Getting to the 21st Century: Voluntary Action and the Global Agenda. Kumarian Press, Oxford & IBH Publishing, 1990.
Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.