Citazione Stile APA (7a Edizione)

William G Zikmund. (2013). Business Research Methods.: 9th ed (9th ed.). Cenage.

Citazione stile Chigago Style (17a edizione)

William G Zikmund. Business Research Methods.: 9th Ed. 9th ed. United States: Cenage, 2013.

Citatione MLA (9a ed.)

William G Zikmund. Business Research Methods.: 9th Ed. 9th ed. Cenage, 2013.