See for example, F. Bechhofer and B. Elliott "An approach to a study of Small Shopkeepers and the Class Structure". European Journal of Sociology, Vol. IX, 1968.
2.
F. Bechhofer and B. Elliott, "The Voice of Small Business and the Politics of Survival ", Sociological Review, Vol. 26, 1978 .
3.
N. Poulantzas, Classes in Contemporary Capitalism, New Left Books, London, 1975.