Boyd, Harper W. Jr., Westfall, Ralph (1972) Marketing Research: Text and cases, 3rd Edition, Homewood, Illinois: Richard D. Irwin.
2.
Cohen, Joel B. (1967) "An Interpersonal Orientation to the Study of Consumer Behavior," Journal of Marketing Research, 4, August, 270-278.
3.
Flanagan, John C.1954. "The Critical Incident Technique," Psychological Bulletin, 51,327-358.
4.
Fry, Joseph N., Claxton, John D.1971. "Semantic Differential and Nonmetric Multidimensional Scaling Descriptions of Brand Images," Journal of Marketing Research, 8, May, 238-40.
5.
Herzberg, Frederick, Mausner, B., Snyderman, B.1959. The Motivation To Work, 2nd Edition, New York: John Wiley.
6.
Mukherjee, Biswa N.1965. "A Factor Analysis of Some Qualitative Attributes of Coffee ," Journal of Advertising Research, 5, March, 35-38.
