Zikmund & Babin & Others. (2014). Business Research Methods (8 th.). Cengage Learning.
Cita Chicago (17th ed.)Zikmund & Babin & Others. Business Research Methods. 8 th. Andover: Cengage Learning, 2014.
Cita MLA (9th ed.)Zikmund & Babin & Others. Business Research Methods. 8 th. Cengage Learning, 2014.
Atenció: Aquestes cites poden no estar 100% correctes.