1. Allport, G. W., & Ross, J. M. (1967). Personal religious orientation and prejudice. Journal of Personality and Social Psychology, 5, 432–443. doi: 10.1037/h0021212 .
2. Bălţătescu, S., & Cummins, R. A. (2006). Using the Personal Well-Being Index to explore subjective well-being of high-school and college students in Romania. Paper presented at the Seventh ISQOLS Conference, Grahamstown, South Africa.
3. Berger, P. L. (Ed.). (1999). The desecularization of the world. Washington, D.C.: Ethics and Public Policy Center.
4. Bergin, A. E. (1991). Values and religious issues in psychotherapy and mental health. The American Psychologist, 46, 394–403. doi: 10.1037/0003-066X.46.4.394 .
5. Casas, F., & Gaitán, L. (2008). Spain. En I. Epstein (General Ed.) & L.J. Limage (Volume Ed.): The Greenwood Encyclopaedia of Children’s Issues Worldwide (pp. 417-441). Europe. Westport (Con.). Greenwood.