APA aipamena

OECD. (2011). Health at a Glance 2011: OECD Indicators. OECD.

Chicago Style aipamena

OECD. Health At a Glance 2011: OECD Indicators. OECD, 2011.

MLA aipamena

OECD. Health At a Glance 2011: OECD Indicators. OECD, 2011.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.