1. Andrews, F. M. (ed.): 1986, Research on Quality of Life ( Institute for Social Research, Ann Arbor, MI ).
2. Bauer, R. A. (ed.): 1966, Social Indicators ( MIT Press, Cambridge, MA ).
3. Campbell, A.: 1981, The Sense of Well-Being in America ( McGraw-Hill, New York).
4. Diener, E. and E. Suh: 1997, ‘Measuring quality of life: economic, social, and subjective indicators’, Social Indicators Research 40, pp. 189–216.
5. Horn, R. V.: 1993, Statistical Indicators for the Economic Sciences ( Cambridge University Press, Cambridge).