APA (7th ed.) Zitazioa
ebrary, Inc. (2007). Pocket world in figures (2008 ed.). Economist in association with Profile Books.
Chicago Style (17th ed.) Zitazioa
ebrary, Inc. Pocket World in Figures. 2008 ed. London: Economist in association with Profile Books, 2007.
MLA (9th ed.) Zitazioa
ebrary, Inc. Pocket World in Figures. 2008 ed. Economist in association with Profile Books, 2007.
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