Hatcher, L. (1994). A step-by-step approach to using the SAS system for factor analysis and
structural equation modeling. Cary, NC: SAS Institute.
Hoyle, R. (1995). Structural equation modeling : concepts, issues and applications. Thousand
Oaks, CA: Sage Publications.
Hu, L. & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis:
Conventional criteria versus new alternatives. Structural Equation Modeling, 6(1), 1-55.