Cita APA (7a ed.)

Organisation for Economic Co-operation and Development. (2011). Portugal 2011. OECD.

Cita Chicago Style (17a ed.)

Organisation for Economic Co-operation and Development. Portugal 2011. [Paris]: OECD, 2011.

Cita MLA (9a ed.)

Organisation for Economic Co-operation and Development. Portugal 2011. OECD, 2011.