Holmes, P. M. (1966). Marketing research; principles and readings. South-Western Pub.
Cita Chicago (17th ed.)Holmes, Peter M. Marketing Research; Principles and Readings. Cincinnati: South-Western Pub, 1966.
Cita MLA (9th ed.)Holmes, Peter M. Marketing Research; Principles and Readings. South-Western Pub, 1966.
Atenció: Aquestes cites poden no estar 100% correctes.