1. Arendt H (1958)The Human Condition: Vita Activa. Chicago.
2. Asplund J (1987)Det sociala livets elementära former. Korpen, Göteborg. English Translation of Title:The elementary forms of social life.
3. Berg L-E (1992)Den lekande människan. Studentlitteratur, Lund. (Translation of title:The Playing Human.)
4. Bruner et al. (1976)Play, its role in development and evolution. Harmondsworth: Penguin
5. Denzin N (1977)Childhood Socialization. San Francisco: Jossey Bass