Παραπομπή σε μορφή APA (7η εκδ.)

Zikmund, W. G. (2013). Business research methods (9th ed.). South-western cengage learning.

Παραπομπή σε μορφή Chicago (17η εκδ.)

Zikmund, William G. Business Research Methods. 9th ed. Andover: South-western cengage learning, 2013.

Παραπομπή σε μορφή MLA (8th εκδ.)

Zikmund, William G. Business Research Methods. 9th ed. South-western cengage learning, 2013.