Παραπομπή APA

Beri, G. C. (2005). Marketing research (3 edition.).

Παραπομπή Chicago Style

Beri, G C. Marketing Research. 3 edition. Tata Mc Graw Hill: New Delhi, 2005.

Παραπομπή MLA

Beri, G C. Marketing Research. 3 edition. 2005.