Παραπομπή APA

Beri, G. (2005). Marketing Research. Tata Mc Graw -Hill Publishing Company Limited.

Παραπομπή Chicago Style

Beri, G.C. Marketing Research. New Delhi: Tata Mc Graw -Hill Publishing Company Limited, 2005.

Παραπομπή MLA

Beri, G.C. Marketing Research. Tata Mc Graw -Hill Publishing Company Limited, 2005.