Organisation for Economic Co-operation and Development & ProQuest (Firm). (2009). Highlights from Education at a glance 2009. Organisation for Economic Co-operation and Development.
Lua i Stíl Chicago (17ú heag.)Organisation for Economic Co-operation and Development agus ProQuest (Firm). Highlights from Education at a Glance 2009. Paris: Organisation for Economic Co-operation and Development, 2009.
Lua MLA (9ú heag.)Organisation for Economic Co-operation and Development agus ProQuest (Firm). Highlights from Education at a Glance 2009. Organisation for Economic Co-operation and Development, 2009.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.