Anderson, T. W. (1984), An Introduction to Multivariate Statistical Analysis, 2nd Edition, New York: John Wiley & Sons.
Blum, J. R., Kiefer, J., and Rosenblatt, M. (1961), “Distribution Free Tests of Independence Based on the Sample Distribution Function,” Annals of Mathematical Statistics, 32, 485–498.
Conover, W. J. (1999), Practical Nonparametric Statistics, 3rd Edition, New York: John Wiley & Sons.
Cox, N. R. (1974), “Estimation of the Correlation between a Continuous and a Discrete Variable,” Biometrics, 30, 171–178.
Cronbach, L. J. (1951), “Coefficient Alpha and the Internal Structure of Tests,” Psychometrika, 16, 297–334.
Drasgow, F. (1986), “Polychoric and Polyserial Correlations,” in S. Kotz, N. L. Johnson, and C. B. Read, eds., Encyclopedia of Statistical Sciences, volume 7, 68–74, New York: John Wiley & Sons.
Fisher, R. A. (1915), “Frequency Distribution of the Values of the Correlation Coefficient in Samples from an Indefinitely Large Population,” Biometrika, 10, 507–521.
Fisher, R. A. (1921), “On the 'Probable Error' of a Coefficient of Correlation Deduced from a Small Sample,” Metron, 1, 3–32.
Fisher, R. A. (1936), “The Use of Multiple Measurements in Taxonomic Problems,” Annals of Eugenics, 7, 179–188.
Fisher, R. A. (1970), Statistical Methods for Research Workers, 14th Edition, Davien, CT: Hafner Publishing.
Hoeffding, W. (1948), “A Non-parametric Test of Independence,” Annals of Mathematical Statistics, 19, 546–557.
Hollander, M. and Wolfe, D. A. (1999), Nonparametric Statistical Methods, 2nd Edition, New York: John Wiley & Sons.
Keeping, E. S. (1962), Introduction to Statistical Inference, New York: D. Van Nostrand.
Knight, W. E. (1966), “A Computer Method for Calculating Kendall’s Tau with Ungrouped Data,” Journal of the American Statistical Association, 61, 436–439.
Moore, D. S. (2000), Statistics: Concepts and Controversies, 5th Edition, New York: W. H. Freeman.
Mudholkar, G. S. (1983), “Fisher’s z-Transformation,” Encyclopedia of Statistical Sciences, 3, 130–135.
Noether, G. E. (1967), Elements of Nonparametric Statistics, New York: John Wiley & Sons.
Novick, M. R. (1967), “Coefficient Alpha and the Reliability of Composite Measurements,” Psychometrika, 32, 1–13.
Nunnally, J. C. and Bernstein, I. H. (1994), Psychometric Theory, 3rd Edition, New York: McGraw-Hill.
Olsson, U., Drasgow, F., and Dorans, N. J. (1982), “The Polyserial Correlation Coefficient,” Biometrika, 47, 337–347.
Ott, R. L. and Longnecker, M. T. (2000), An Introduction to Statistical Methods and Data Analysis, 5th Edition, Belmont, CA: Wadsworth.
Spector, P. E. (1992), Summated Rating Scale Construction: An Introduction, Newbury Park, CA: Sage Publications.
Yu, C. H. (2001), “An Introduction to Computing and Interpreting Cronbach Coefficient Alpha in SAS,” in Proceedings of the Twenty-Sixth Annual SAS Users Group International Conference, Cary, NC: SAS Institute Inc.