Cita APA (7th ed.)
Beri, G. C. (1989). Marketing research: Text and cases. Tata Mcgraw-hill.
Cita Chicago (17th ed.)
Beri, G. C. Marketing Research: Text and Cases. New Delhi: Tata Mcgraw-hill, 1989.
Cita MLA (9th ed.)
Beri, G. C. Marketing Research: Text and Cases. Tata Mcgraw-hill, 1989.
Atenció: Aquestes cites poden no estar 100% correctes.