Παραπομπή APA

Donald S Tull and Del I Hawkins. (2003). Marketing Research: Measurement and Method (6th.). Prentice Hall of India Pvt. Ltd.

Παραπομπή Chicago Style

Donald S Tull and Del I Hawkins. Marketing Research: Measurement and Method. 6th. New Delhi: Prentice Hall of India Pvt. Ltd, 2003.

Παραπομπή MLA

Donald S Tull and Del I Hawkins. Marketing Research: Measurement and Method. 6th. Prentice Hall of India Pvt. Ltd, 2003.