Cita APA (7th ed.)

Sigma Insight Group. (2004). Corporate Strategy. Sigma Insight Group.

Cita Chicago (17th ed.)

Sigma Insight Group. Corporate Strategy. Seoul, korea: Sigma Insight Group, 2004.

Cita MLA (8th ed.)

Sigma Insight Group. Corporate Strategy. Sigma Insight Group, 2004.

Atenció: Aquestes cites poden no estar 100% correctes.