Organisation for Economic Co-operation and Development & ProQuest (Firm). (2008). Productivity measurement and analysis: 2008. OECD.
Lua i Stíl Chicago (17ú heag.)Organisation for Economic Co-operation and Development agus ProQuest (Firm). Productivity Measurement and Analysis: 2008. Paris, France: OECD, 2008.
Lua MLA (9ú heag.)Organisation for Economic Co-operation and Development agus ProQuest (Firm). Productivity Measurement and Analysis: 2008. OECD, 2008.
Rabhadh: Seans nach mbeach na luanna seo go hiomlán cruinn i ngach uile chás.