APA (7th ed.) Zitazioa

Organisation for Economic Co-operation and Development & ProQuest (Firm). (2009). Pensions at a glance 2009: Retirement-income systems in OECD countries. OECD.

Chicago Style (17th ed.) Zitazioa

Organisation for Economic Co-operation and Development eta ProQuest (Firm). Pensions at a Glance 2009: Retirement-income Systems in OECD Countries. Paris: OECD, 2009.

MLA (9th ed.) Zitazioa

Organisation for Economic Co-operation and Development eta ProQuest (Firm). Pensions at a Glance 2009: Retirement-income Systems in OECD Countries. OECD, 2009.