Παραπομπή σε μορφή APA (7η εκδ.)

SEKARAN UMA. (2003). RESEARCH METHODS FOR BUSINESS: A SKILL BUILDING APPROACH (4.). JOHN WILEY AND SONS.

Παραπομπή σε μορφή Chicago (17η εκδ.)

SEKARAN UMA. RESEARCH METHODS FOR BUSINESS: A SKILL BUILDING APPROACH. 4. NEW YORK: JOHN WILEY AND SONS, 2003.

Παραπομπή σε μορφή MLA (9th εκδ.)

SEKARAN UMA. RESEARCH METHODS FOR BUSINESS: A SKILL BUILDING APPROACH. 4. JOHN WILEY AND SONS, 2003.