References
- Tufte, E. R. (1990). The Visual Display of Quantitative Information. Graphics Press, Cheshire, CT.
- Witzling, L. P. and Greenstreet, R. C. (1989). Presenting Statistics: A Manager's Guide to the Persuasive Use of Statistics. John Wiley & Sons, New York, NY.
- Sachs, L. (1982). Applied Statistics. Springer-Verlag, New York, NY.