Helberger, N. (2005). Controlling access to content: Regulating conditional access in digital broadcasting. Kluwer law international.
Stile di citazione ChicagoHelberger, Natali. Controlling Access to Content: Regulating Conditional Access in Digital Broadcasting. Netherlands: Kluwer law international, 2005.
Citazione MLAHelberger, Natali. Controlling Access to Content: Regulating Conditional Access in Digital Broadcasting. Kluwer law international, 2005.
Attenzione: Queste citazioni potrebbero non essere precise al 100%.