Παραπομπή σε μορφή APA (7η εκδ.)

HOFFMAN K DOUGLAS. (2002). ESSENTIALS OF SERVICES MARKETING: CONCEPTS, STRATEGIES AND CASES (2ND.). THOMSON LEARNING.

Παραπομπή σε μορφή Chicago (17η εκδ.)

HOFFMAN K DOUGLAS. ESSENTIALS OF SERVICES MARKETING: CONCEPTS, STRATEGIES AND CASES. 2ND. AUSTRALIA: THOMSON LEARNING, 2002.

Παραπομπή σε μορφή MLA (9th εκδ.)

HOFFMAN K DOUGLAS. ESSENTIALS OF SERVICES MARKETING: CONCEPTS, STRATEGIES AND CASES. 2ND. THOMSON LEARNING, 2002.