1. Anderson, T. W. (1984). An introduction to multivariate statistical analysis. New York: John Wiley and Sons.
2. Balestrino, A., & Sciclone, N. (2000). Should we use functionings instead of income to measure well-being? Theory, and some evidence from Italy. Mimeo, University of Pisa.
3. Bartholomew, D. J., & Knott, M. (1999). Latent variable models and factor analysis. U.K.: Edward Arnold.
4. Biswas, B., & Caliendo, F. (2002). A multivariate analysis of the human development index. Indian Economic Journal, 49(4), 96–100.
5. Bollen, K. A. (1989). Structural equations with latent variables. New York: John Wiley & Sons.