APA aipamena

Beri, G. (2013). Marketing research (5th edition.). McGraw Hill Education (India).

Chicago Style aipamena

Beri, G.C. Marketing Research. 5th edition. New Delhi: McGraw Hill Education (India), 2013.

MLA aipamena

Beri, G.C. Marketing Research. 5th edition. McGraw Hill Education (India), 2013.

Kontuz: berrikusi erreferentzia hauek erabili aurretik.