Não informado. (1974). Race and class. Institute of Race Relations.
Chicago-viite (17. p.)Não informado. Race and Class. London: Institute of Race Relations, 1974.
MLA-viite (8. p.)Não informado. Race and Class. Institute of Race Relations, 1974.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.