organization for economic co-operation and development. (1997). Education at a glance oecd indicators. les indicateurs.
Lua i Stíl Chicago (17ú heag.)organization for economic co-operation and development. Education at a Glance Oecd Indicators. les indicateurs, 1997.
Lua MLA (9ú heag.)organization for economic co-operation and development. Education at a Glance Oecd Indicators. les indicateurs, 1997.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.