Cita APA (7th ed.)
ebrary, Inc. (2007). Pocket world in figures (2008 ed.). Economist in association with Profile Books.
Cita Chicago (17th ed.)
ebrary, Inc. Pocket World in Figures. 2008 ed. London: Economist in association with Profile Books, 2007.
Cita MLA (9th ed.)
ebrary, Inc. Pocket World in Figures. 2008 ed. Economist in association with Profile Books, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.