APA
Beri G. C., . (2000). Marketing research. Tata McGraw Hill, New Delhi: .
Chicago
Beri G C, . 2000. Marketing research. Tata McGraw Hill, New Delhi: .
Harvard
Beri G. C., . (2000). Marketing research. Tata McGraw Hill, New Delhi: .
MLA
Beri G C, . Marketing research. Tata McGraw Hill, New Delhi: . 2000.