Παραπομπή APA

Zikmund William. (2003). Business research methods/7e (7th ed.). Thomson.

Παραπομπή Chicago Style

Zikmund William. Business Research Methods/7e. 7th ed. South-Western: Thomson, 2003.

Παραπομπή MLA

Zikmund William. Business Research Methods/7e. 7th ed. Thomson, 2003.