Sethna, B. (1984). Research methods in marketing and mgt. Tata McGraw Hill.
Cita Chicago (17th ed.)Sethna, B. Research Methods in Marketing and Mgt. New Delhi: Tata McGraw Hill, 1984.
Cita MLA (9th ed.)Sethna, B. Research Methods in Marketing and Mgt. Tata McGraw Hill, 1984.
Atenció: Aquestes cites poden no estar 100% correctes.