APA
Tulls. Donald. Hanloins I. Del, . (2000). Marketing Reserch. New Delhi: Prentice hall of India.
Chicago
Tulls. Donald. Hanloins I. Del, . 2000. Marketing Reserch. New Delhi: Prentice hall of India.
Harvard
Tulls. Donald. Hanloins I. Del, . (2000). Marketing Reserch. New Delhi: Prentice hall of India.
MLA
Tulls. Donald. Hanloins I. Del, . Marketing Reserch. New Delhi: Prentice hall of India. 2000.