ECONOMIST NEWSPAPERS LTD. (1997). POCKET WORLD IN FIGURES. ECONIMIST NEWSPAPERS LTD.
Cita Chicago (17th ed.)ECONOMIST NEWSPAPERS LTD. POCKET WORLD IN FIGURES. LONDON: ECONIMIST NEWSPAPERS LTD, 1997.
Cita MLA (9th ed.)ECONOMIST NEWSPAPERS LTD. POCKET WORLD IN FIGURES. ECONIMIST NEWSPAPERS LTD, 1997.
Atenció: Aquestes cites poden no estar 100% correctes.