1. Allardt E. (1973), A welfare model for selecting indicators of national development, “Policy Sciences” 4.
2. Allardt E. (1976), Dimensions of welfare in a Comparative Scandinavian Study, „Acta Sociologica”, Vol. 19/3.
3. Cueff D. (2006), Dziecko na ulicy: zwalczanie przemocy wobec dzieci ulicy : przewodnik metodologiczny dla pedagogów ulicy: metody pracy w środowisku otwartym: europejski projekt DAPHNE.
4. Delhey J. (2004), Life satisfaction in an enlarged Europe, European Foundation for the Improvement of Living and Working Conditions, Luxembourg, Office for Official Publications of the European Communities.
5. Hood S. (2007), Reporting on Children’s Well-being, The State of London’s Children Reports, Kluwer Academic Publishers, “Social Indicators Research”, Vol. 80, s. 1249–1264.