Hair, Joseph F., Jr., Rolph E. Anderson, Ronald L. Tatham,
and Bernie J. Grablowsky. 1984. Multivariate Data Analysis
with Readings. New York: Macmillan Publishing Co.
Hughes, Adele. 1984. Class notes to graduate coursework in
Applied Stastistical Methods.
Punj, Girish and David W. Stewart. 1983. Cluster analysis
in marketing research: review and suggestions for application.
Journal of Marketing Research 20 (May) 134-48. cluster
Sethi, S. P. 1971. Comparative cluster analysis for world
markets. Journal of Marketing Research, 8 (August) 384-54.