Παραπομπή APA

Walker, O. C. (2006). Marketing strategy (5th ed.). Tata McGraw Hill.

Παραπομπή Chicago Style

Walker, Orville C. Marketing Strategy. 5th ed. New Delhi: Tata McGraw Hill, 2006.

Παραπομπή MLA

Walker, Orville C. Marketing Strategy. 5th ed. Tata McGraw Hill, 2006.