The Economist. (2003). The economist pocket world in figures 2004 (2004 edition.). The Economist Newspaper Ltd..
Cita Chicago (17th ed.)The Economist. The Economist Pocket World in Figures 2004. 2004 edition. London: The Economist Newspaper Ltd., 2003.
Cita MLA (9th ed.)The Economist. The Economist Pocket World in Figures 2004. 2004 edition. The Economist Newspaper Ltd., 2003.
Atenció: Aquestes cites poden no estar 100% correctes.