Lua APA (7ú heag.)

Zikmund & Babin & Others. (2014). Business Research Methods (8 th.). Cengage Learning.

Lua i Stíl Chicago (17ú heag.)

Zikmund & Babin & Others. Business Research Methods. 8 th. Andover: Cengage Learning, 2014.

Lua MLA (9ú heag.)

Zikmund & Babin & Others. Business Research Methods. 8 th. Cengage Learning, 2014.

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