Sigma Insight Group. (2004). Corporate Strategy. Sigma Insight Group.
Cita Chicago Style (17a ed.)Sigma Insight Group. Corporate Strategy. Seoul, korea: Sigma Insight Group, 2004.
Cita MLA (8a ed.)Sigma Insight Group. Corporate Strategy. Sigma Insight Group, 2004.
Precaución: Estas citas no son 100% exactas.