References

Gray, Peter. (1994). Psychology (2nd Edition). New York: Worth Publishers, Inc.

Hays, W. L. (1981). Statistics (3rd edition). New York: Holt, Rinehart and Winston.

Kenny, D. A. (1987). Statistics for the social and behavioral sciences. Boston, MA: Little, Brown and Company.

Myers, David G. (1995). Psychology (4th Edition). New York: Worth Publishers, Inc.

Myers, David G. (1996). Exploring Psychology (3rd Edition). New York: Worth Publishers, Inc.