Hacking I. (1999): The Social Construction of What? Harvard University Press

Parker H. , & Aldridge J. , & Measham F. (1998): Illegal leisure. The normalization of adolescent recreational drug use. London: Routledge

Parker H. , & Williams L. , & Aldridge J. (2002): The normalization of ‘sensible’ recreational drug use: Further evidence from the North West England Longitudinal Study. Sociology 36(4): 941–964.