Cita APA (7th ed.)
ebrary, Inc. (2007). Business strategy series. Emerald Insight.
Cita Chicago (17th ed.)
ebrary, Inc. Business Strategy Series. Bradford: Emerald Insight, 2007.
Cita MLA (9th ed.)
ebrary, Inc. Business Strategy Series. Emerald Insight, 2007.
Atenció: Aquestes cites poden no estar 100% correctes.