Delors,Jacques. (1998). Education for the twenty-first century: Issues and prospects. UNESCO.
Chicago Stili AlıntıDelors,Jacques. Education for the Twenty-first Century: Issues and Prospects. Paris: UNESCO, 1998.
MLA AlıntıDelors,Jacques. Education for the Twenty-first Century: Issues and Prospects. UNESCO, 1998.
Uyarı: Bu alıntı herzaman %100 doğru olmayabilir..