1. Asher, H. B.: 1976, Causal Modeling. Sage Publications, Beverly Hills.
2. Bentler, P. M.: 1980, ‘Multivariate Analysis with Latent Variables; Causal Modeling’, Annual Review of Psychology
31, 419–56.
3. Blalock, H. M., Jr.: 1964, Causal Inference in Nonexperimental Research, University of North Carolina Press, Chapel Hill.
4. Campbell, D. T. and J. C. Stanley: 1963, Experimental and Quasi Experimental Designs for Research, Rand McNally, Chicago.
5. Cartwright, N.: 1979, ‘Causal Laws and Effective Strategies’, Nous
13, 419–37.