Stephen Ison; Stuart Wall. (2007). Economics (4.). "Trans-Atlantic Publications, Inc.".
Cita Chicago (17th ed.)Stephen Ison; Stuart Wall. Economics. 4. "Trans-Atlantic Publications, Inc.", 2007.
Cita MLA (9th ed.)Stephen Ison; Stuart Wall. Economics. 4. "Trans-Atlantic Publications, Inc.", 2007.
Atenció: Aquestes cites poden no estar 100% correctes.