BERI (G.C), . (2007). Marketing Research. New Delhi: Tata McGraw-Hil Publication Company Limited . Delhi.
BERI (G.C), . 2007. Marketing Research. New Delhi: Tata McGraw-Hil Publication Company Limited . Delhi.
BERI (G.C), . Marketing Research. New Delhi: Tata McGraw-Hil Publication Company Limited . Delhi. 2007.