Delors,Jacques. (1998). Education for the twenty-first century: Issues and prospects. UNESCO.
Style de citation ChicagoDelors,Jacques. Education for the Twenty-first Century: Issues and Prospects. Paris: UNESCO, 1998.
Style de citation MLADelors,Jacques. Education for the Twenty-first Century: Issues and Prospects. UNESCO, 1998.
Attention : ces citations peuvent ne pas être correctes à 100%.