ZIKMUND I , B. C. (2013). BUSINESS RESEARCH METHODS (9TH.). CENGAGE.
Cita Chicago Style (17a ed.)ZIKMUND I , BABIN CARR. BUSINESS RESEARCH METHODS. 9TH. NEW DELHI: CENGAGE, 2013.
Cita MLA (9a ed.)ZIKMUND I , BABIN CARR. BUSINESS RESEARCH METHODS. 9TH. CENGAGE, 2013.
Precaución: Estas citas no son 100% exactas.