Zikmund & Babin & Others. (2014). Business Research Methods (8 th.). Cengage Learning.
Chicago-referens (17:e uppl.)Zikmund & Babin & Others. Business Research Methods. 8 th. Andover: Cengage Learning, 2014.
MLA-referens (9:e uppl.)Zikmund & Babin & Others. Business Research Methods. 8 th. Cengage Learning, 2014.
Varning: dessa hänvisningar är inte alltid fullständigt riktiga.