WolfleLee M. (1985), “Applications of Causal Models in Higher Education,” in Higher Education: Handbook of Theory and Research, Vol. 1, SmartJohn C., ed. New York: Agathon Press, 381–413.
3.
WothkeWerner (1993), “Nonpositive Definite Matrices in Structural Modeling,” in Testing Structural Equation Models, BollenKenneth A., and Scott LongJ., eds. Newbury Park, CA: Sage Publications, 256–93.