1. American Psychological Association (1954). Standards for educational and psychological tests. Washington, D.C.: American Psychological Association.
2. American Psychological Association, American Educational Research Association, & National Council on Measurement in Education (1985). Standards for educational and psychological testing. Washington, D.C.: American Psychological Association.
3. (1988). Validity: An evolving concept. In & (Eds.), Test validity (pp. 19–32). Hillsdale, NJ: Laurence Erlbaum.
4. & (1976). An introduction to multivariate techniques for social and behavioral sciences. London: Macmillan.
5. (1988). Causal modeling via structural equation systems. In & (Eds.), Handbook of multivariate experimental psychology (pp. 317–336). New York: Plenum.