Marketing research
Hair Joseph F., Bush Robert P., Ortinau David J.Kniha
Citace v seznamu literatury:
HAIR, Joseph F.; BUSH, Robert P. a ORTINAU, David J. Marketing research: a practical approach for the new Millennium. The Irwin/McGraw-Hill series in marketing. Boston: Irwin/McGraw-Hill, c2000. ISBN 0256195552.