Sekaran Uma. Research Methods for Business (5th.). Wiley India.
Cita Chicago (17th ed.)Sekaran Uma. Research Methods for Business. 5th. 2010: Wiley India.
Cita MLA (9th ed.)Sekaran Uma. Research Methods for Business. 5th. Wiley India.
Atenció: Aquestes cites poden no estar 100% correctes.