Chatfield, C. (1995), Problem Solving – a Statistician´S Guide (2nd ed.), Boca Raton, Florida: Chapman and Hall/CRC.
Field, A. (2010), Discovering Statistics Using SPSS (3rd ed.), London: Sage.
Makridakis, S., Wheelwright, S., and Hyndman, R. (1998), Forecasting – Methods and Applications (3rd ed.), New York: Jonh Wiley and Sons.
Manly, B. F. J. (2007), Multivariate Statistical Methods: A Primer (3rd ed.), Boca Raton, Florida: Chapman and Hall/CRC.
Montgomery, D. C., Peck, E. A., and Vining, G. G. (2006), Introduction to Linear Regression Analysis (4th ed.), New York: John Wiley and Sons.
Afifi, A., Clark, V., and May, S. (2004), Computer - Aided Multivariate Analysis (4th ed.), Boca Raton, Florida: Chapman and Hall/CRC.
Marôco, J. (2010), Análise Estatística com o PASW Statistics (ex-SPSS), Lisboa: Report Number.
Sheskin, D. J. (2007), Handbook of Parametric and Nonparametric Statistical Procedures (4th ed.), Boca Raton, Florida: Chapman and Hall/CRC.: nullnull