The Economist. (2003). The economist pocket world in figures 2004 (2004 edition.). The Economist Newspaper Ltd..
Tohutoru Kātū Chicago (17th ed.)The Economist. The Economist Pocket World in Figures 2004. 2004 edition. London: The Economist Newspaper Ltd., 2003.
Tohutoro MLA (9th ed.)The Economist. The Economist Pocket World in Figures 2004. 2004 edition. The Economist Newspaper Ltd., 2003.
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