Organisation for Economic Co-operation and Development. Statistics Directorate. (1996). Main economic indicators. Organisation for Economic Co-operation and Development.
Cita Chicago (17th ed.)Organisation for Economic Co-operation and Development. Statistics Directorate. Main Economic Indicators. Paris: Organisation for Economic Co-operation and Development, 1996.
Cita MLA (8th ed.)Organisation for Economic Co-operation and Development. Statistics Directorate. Main Economic Indicators. Organisation for Economic Co-operation and Development, 1996.
Atenció: Aquestes cites poden no estar 100% correctes.