The Economist. (2006). The economist pocket world in figures 2007 (2007 edition.). The Economist in association with Profile Books.
Chicago-referens (17:e uppl.)The Economist. The Economist Pocket World in Figures 2007. 2007 edition. London: The Economist in association with Profile Books, 2006.
MLA-referens (9:e uppl.)The Economist. The Economist Pocket World in Figures 2007. 2007 edition. The Economist in association with Profile Books, 2006.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.